2556940081740 has 96 divisors (see below), whose sum is σ = 7838486256384. Its totient is φ = 617626440960.

The previous prime is 2556940081739. The next prime is 2556940081757. The reversal of 2556940081740 is 471800496552.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6810234 + ... + 7175873.

It is an arithmetic number, because the mean of its divisors is an integer number (81650898504).

Almost surely, 2^{2556940081740} is an apocalyptic number.

2556940081740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2556940081740 is an abundant number, since it is smaller than the sum of its proper divisors (5281546174644).

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

2556940081740 is a wasteful number, since it uses less digits than its factorization.

2556940081740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13986407 (or 13986405 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 2556940081740 in words is "two trillion, five hundred fifty-six billion, nine hundred forty million, eighty-one thousand, seven hundred forty".