12156265064 has 16 divisors (see below), whose sum is σ = 23133192000. Its totient is φ = 5987413872.

The previous prime is 12156265061. The next prime is 12156265139. The reversal of 12156265064 is 46056265121.

It is not an unprimeable number, because it can be changed into a prime (12156265061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11339264 + ... + 11340335.

It is an arithmetic number, because the mean of its divisors is an integer number (1445824500).

Almost surely, 2^12156265064 is an apocalyptic number.

It is an amenable number.

12156265064 is a deficient number, since it is larger than the sum of its proper divisors (10976926936).

12156265064 is a wasteful number, since it uses less digits than its factorization.

12156265064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22679672 (or 22679668 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 12156265064 in words is "twelve billion, one hundred fifty-six million, two hundred sixty-five thousand, sixty-four".