2556731164988 has 72 divisors (see below), whose sum is σ = 6052935170016. Its totient is φ = 919503699840.

The previous prime is 2556731164979. The next prime is 2556731165117. The reversal of 2556731164988 is 8894611376552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28980695 + ... + 29068782.

It is an arithmetic number, because the mean of its divisors is an integer number (84068544028).

Almost surely, 2^{2556731164988} is an apocalyptic number.

2556731164988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2556731164988 is an abundant number, since it is smaller than the sum of its proper divisors (3496204005028).

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

2556731164988 is a wasteful number, since it uses less digits than its factorization.

2556731164988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58049523 (or 58049510 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 65.

The spelling of 2556731164988 in words is "two trillion, five hundred fifty-six billion, seven hundred thirty-one million, one hundred sixty-four thousand, nine hundred eighty-eight".