2557870768 has 20 divisors (see below), whose sum is σ = 4959735880. Its totient is φ = 1277938944.

The previous prime is 2557870759. The next prime is 2557870771. The reversal of 2557870768 is 8670787552.

It is a happy number.

It is a super-3 number, since 3×2557870768³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40878 + ... + 82381.

It is an arithmetic number, because the mean of its divisors is an integer number (247986794).

Almost surely, 2^2557870768 is an apocalyptic number.

It is an amenable number.

2557870768 is a deficient number, since it is larger than the sum of its proper divisors (2401865112).

2557870768 is a wasteful number, since it uses less digits than its factorization.

2557870768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124564 (or 124558 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 55.

The square root of 2557870768 is about 50575.3968644834. The cubic root of 2557870768 is about 1367.6013880290.

The spelling of 2557870768 in words is "two billion, five hundred fifty-seven million, eight hundred seventy thousand, seven hundred sixty-eight".