Search a number
-
+
20123060061 = 3137319735879
BaseRepresentation
bin10010101111011011…
…011000011101011101
31220221102002100220210
4102233123120131131
5312203000410221
613124443003033
71311445121406
oct225733303535
956842070823
1020123060061
118596a40955
123a97209479
131b89033640
14d8c79a9ad
157cb978276
hex4af6d875d

20123060061 has 32 divisors (see below), whose sum is σ = 29439970560. Its totient is φ = 12151448064.

The previous prime is 20123060053. The next prime is 20123060071. The reversal of 20123060061 is 16006032102.

It is a happy number.

It is not a de Polignac number, because 20123060061 - 23 = 20123060053 is a prime.

It is a super-3 number, since 3×201230600613 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123060071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542920 + ... + 578798.

It is an arithmetic number, because the mean of its divisors is an integer number (919999080).

Almost surely, 220123060061 is an apocalyptic number.

It is an amenable number.

20123060061 is a deficient number, since it is larger than the sum of its proper divisors (9316910499).

20123060061 is a wasteful number, since it uses less digits than its factorization.

20123060061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36165.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20123060061 its reverse (16006032102), we get a palindrome (36129092163).

The spelling of 20123060061 in words is "twenty billion, one hundred twenty-three million, sixty thousand, sixty-one".

Divisors: 1 3 13 39 73 197 219 591 949 2561 2847 7683 14381 35879 43143 107637 186953 466427 560859 1399281 2619167 7068163 7857501 21204489 34049171 91886119 102147513 275658357 515975899 1547927697 6707686687 20123060061