2656042600 has 96 divisors (see below), whose sum is σ = 6560037720. Its totient is φ = 996638720.

The previous prime is 2656042573. The next prime is 2656042643. The reversal of 2656042600 is 62406562.

It can be written as a sum of positive squares in 12 ways, for example, as 1106360644 + 1549681956 = 33262^2 + 39366^2 .

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, 1199094 + ... + 1201306.

Almost surely, 2^2656042600 is an apocalyptic number.

2656042600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656042600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3280018860).

2656042600 is an abundant number, since it is smaller than the sum of its proper divisors (3903995120).

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

2656042600 is a wasteful number, since it uses less digits than its factorization.

2656042600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2656042600 is about 51536.8082053982. The cubic root of 2656042600 is about 1384.8785185407.

The spelling of 2656042600 in words is "two billion, six hundred fifty-six million, forty-two thousand, six hundred".