12555691368 has 32 divisors (see below), whose sum is σ = 34242795360. Its totient is φ = 3804754880.

The previous prime is 12555691363. The next prime is 12555691387. The reversal of 12555691368 is 86319655521.

It is a super-2 number, since 2×12555691368² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12555691368.

It is not an unprimeable number, because it can be changed into a prime (12555691363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23779455 + ... + 23779982.

It is an arithmetic number, because the mean of its divisors is an integer number (1070087355).

Almost surely, 2^12555691368 is an apocalyptic number.

It is an amenable number.

12555691368 is an abundant number, since it is smaller than the sum of its proper divisors (21687103992).

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

12555691368 is a wasteful number, since it uses less digits than its factorization.

12555691368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47559457 (or 47559453 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 51.

The spelling of 12555691368 in words is "twelve billion, five hundred fifty-five million, six hundred ninety-one thousand, three hundred sixty-eight".