2555747651556 has 96 divisors (see below), whose sum is σ = 7477631683200. Its totient is φ = 747763148160.

The previous prime is 2555747651503. The next prime is 2555747651557. The reversal of 2555747651556 is 6551567475552.

2555747651556 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 7 + 4 + 76 + 5 + 1 + 556 = 666.

It is a super-2 number, since 2×2555747651556² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2555747651493 and 2555747651502.

It is not an unprimeable number, because it can be changed into a prime (2555747651557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37056975 + ... + 37125878.

It is an arithmetic number, because the mean of its divisors is an integer number (77891996700).

Almost surely, 2^{2555747651556} is an apocalyptic number.

It is an amenable number.

2555747651556 is an abundant number, since it is smaller than the sum of its proper divisors (4921884031644).

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

2555747651556 is a wasteful number, since it uses less digits than its factorization.

2555747651556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74182906 (or 74182898 counting only the distinct ones).

The product of its digits is 220500000, while the sum is 63.

The spelling of 2555747651556 in words is "two trillion, five hundred fifty-five billion, seven hundred forty-seven million, six hundred fifty-one thousand, five hundred fifty-six".