2656042551 has 24 divisors (see below), whose sum is σ = 3880300320. Its totient is φ = 1750536000.

The previous prime is 2656042483. The next prime is 2656042573. The reversal of 2656042551 is 1552406562.

2656042551 is a `hidden beast` number, since 2 + 6 + 5 + 60 + 42 + 551 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2656042551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656042451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 744510 + ... + 748068.

It is an arithmetic number, because the mean of its divisors is an integer number (161679180).

Almost surely, 2^2656042551 is an apocalyptic number.

2656042551 is a deficient number, since it is larger than the sum of its proper divisors (1224257769).

2656042551 is a wasteful number, since it uses less digits than its factorization.

2656042551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4484 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2656042551 is about 51536.8077300098. The cubic root of 2656042551 is about 1384.8785100244.

The spelling of 2656042551 in words is "two billion, six hundred fifty-six million, forty-two thousand, five hundred fifty-one".