2558751656 has 64 divisors (see below), whose sum is σ = 5199621120. Its totient is φ = 1176975360.

The previous prime is 2558751623. The next prime is 2558751661. The reversal of 2558751656 is 6561578552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985496 + ... + 988088.

It is an arithmetic number, because the mean of its divisors is an integer number (81244080).

Almost surely, 2^2558751656 is an apocalyptic number.

It is an amenable number.

2558751656 is an abundant number, since it is smaller than the sum of its proper divisors (2640869464).

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

2558751656 is a wasteful number, since it uses less digits than its factorization.

2558751656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826 (or 2822 counting only the distinct ones).

The product of its digits is 2520000, while the sum is 50.

The square root of 2558751656 is about 50584.1047761053. The cubic root of 2558751656 is about 1367.7583630412.

The spelling of 2558751656 in words is "two billion, five hundred fifty-eight million, seven hundred fifty-one thousand, six hundred fifty-six".