Search a number
-
+
131330051456 = 2729271130553
BaseRepresentation
bin111101001001111100…
…0011000110110000000
3110112222121122212012212
41322103320120312000
54122430443121311
6140155430441252
712326324006252
oct1722370306600
9415877585185
10131330051456
115077343250a
1221552203228
13c4cc602026
1464dbdadcd2
1536399dcc8b
hex1e93e18d80

131330051456 has 64 divisors (see below), whose sum is σ = 271656763200. Its totient is φ = 63166279680.

The previous prime is 131330051441. The next prime is 131330051459. The reversal of 131330051456 is 654150033131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131330051459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940676 + ... + 1071228.

It is an arithmetic number, because the mean of its divisors is an integer number (4244636925).

Almost surely, 2131330051456 is an apocalyptic number.

131330051456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131330051456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135828381600).

131330051456 is an abundant number, since it is smaller than the sum of its proper divisors (140326711744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131330051456 is a wasteful number, since it uses less digits than its factorization.

131330051456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130867 (or 130855 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 131330051456 its reverse (654150033131), we get a palindrome (785480084587).

The spelling of 131330051456 in words is "one hundred thirty-one billion, three hundred thirty million, fifty-one thousand, four hundred fifty-six".

Divisors: 1 2 4 8 16 29 32 58 64 116 128 232 271 464 542 928 1084 1856 2168 3712 4336 7859 8672 15718 17344 31436 34688 62872 125744 130553 251488 261106 502976 522212 1005952 1044424 2088848 3786037 4177696 7572074 8355392 15144148 16710784 30288296 35379863 60576592 70759726 121153184 141519452 242306368 283038904 484612736 566077808 1026016027 1132155616 2052032054 2264311232 4104064108 4528622464 8208128216 16416256432 32832512864 65665025728 131330051456