12566512032 has 24 divisors (see below), whose sum is σ = 32987094336. Its totient is φ = 4188837312.

The previous prime is 12566512031. The next prime is 12566512039. The reversal of 12566512032 is 23021566521.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12566511984 and 12566512002.

It is not an unprimeable number, because it can be changed into a prime (12566512031) 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, 65450488 + ... + 65450679.

It is an arithmetic number, because the mean of its divisors is an integer number (1374462264).

Almost surely, 2^12566512032 is an apocalyptic number.

12566512032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12566512032 is an abundant number, since it is smaller than the sum of its proper divisors (20420582304).

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

12566512032 is a wasteful number, since it uses less digits than its factorization.

12566512032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130901180 (or 130901172 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 12566512032 in words is "twelve billion, five hundred sixty-six million, five hundred twelve thousand, thirty-two".