Search a number
-
+
47511356841 = 312132232
BaseRepresentation
bin101100001111111001…
…011100010110101001
311112122011000000000000
4230033321130112221
51234300401404331
633454301133213
73301242604224
oct541771342651
9145564000000
1047511356841
1119170a16673
12925b55a209
1346322b8900
142429dd85bb
15138115e0e6
hexb0fe5c5a9

47511356841 has 117 divisors (see below), whose sum is σ = 80671896039. Its totient is φ = 27966551184.

The previous prime is 47511356831. The next prime is 47511356909. The reversal of 47511356841 is 14865311574.

The square root of 47511356841 is 217971.

It is a perfect power (a square), and thus also a powerful number.

47511356841 is a `hidden beast` number, since 4 + 7 + 511 + 3 + 56 + 84 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7028307225 + 40483049616 = 83835^2 + 201204^2 .

It is a tau number, because it is divible by the number of its divisors (117).

It is not a de Polignac number, because 47511356841 - 213 = 47511348649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47511356801) by changing a digit.

It is a polite number, since it can be written in 116 ways as a sum of consecutive naturals, for example, 2065711156 + ... + 2065711178.

Almost surely, 247511356841 is an apocalyptic number.

47511356841 is the 217971-st square number.

47511356841 is the 108986-th centered octagonal number.

It is an amenable number.

47511356841 is a deficient number, since it is larger than the sum of its proper divisors (33160539198).

47511356841 is an frugal number, since it uses more digits than its factorization.

47511356841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 39 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The spelling of 47511356841 in words is "forty-seven billion, five hundred eleven million, three hundred fifty-six thousand, eight hundred forty-one".

Divisors: 1 3 9 13 23 27 39 69 81 117 169 207 243 299 351 507 529 621 729 897 1053 1521 1587 1863 2187 2691 3159 3887 4563 4761 5589 6561 6877 8073 9477 11661 13689 14283 16767 19683 20631 24219 28431 34983 41067 42849 50301 59049 61893 72657 85293 89401 104949 123201 128547 150903 177147 185679 217971 255879 268203 314847 369603 385641 452709 531441 557037 653913 767637 804609 944541 1108809 1156923 1358127 1671111 1961739 2302911 2413827 2833623 3326427 3470769 4074381 5013333 5885217 6908733 7241481 8500869 9979281 10412307 12223143 15039999 17655651 21724443 25502607 29937843 31236921 45119997 52966953 65173329 76507821 89813529 93710763 135359991 158900859 195519987 229523463 281132289 406079973 586559961 688570389 1218239919 1759679883 2065711167 3654719757 5279039649 15837118947 47511356841