2012565431556 has 48 divisors (see below), whose sum is σ = 5223836699200. Its totient is φ = 670074140736.

The previous prime is 2012565431551. The next prime is 2012565431561. The reversal of 2012565431556 is 6551345652102.

2012565431556 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 5 + 65 + 4 + 31 + 556 = 666.

It is an interprime number because it is at equal distance from previous prime (2012565431551) and next prime (2012565431561).

It is a super-2 number, since 2×2012565431556² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2012565431551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10754065 + ... + 10939608.

Almost surely, 2^{2012565431556} is an apocalyptic number.

It is an amenable number.

2012565431556 is an abundant number, since it is smaller than the sum of its proper divisors (3211271267644).

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

2012565431556 is a wasteful number, since it uses less digits than its factorization.

2012565431556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21694545 (or 21694537 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 2012565431556 in words is "two trillion, twelve billion, five hundred sixty-five million, four hundred thirty-one thousand, five hundred fifty-six".