2564512844 has 12 divisors (see below), whose sum is σ = 4488451968. Its totient is φ = 1282098000.

The previous prime is 2564512843. The next prime is 2564512871. The reversal of 2564512844 is 4482154652.

2564512844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2564512844² = 13153452254081936672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2564512843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574 + ... + 71634.

It is an arithmetic number, because the mean of its divisors is an integer number (374037664).

Almost surely, 2^2564512844 is an apocalyptic number.

It is an amenable number.

2564512844 is a deficient number, since it is larger than the sum of its proper divisors (1923939124).

2564512844 is a wasteful number, since it uses less digits than its factorization.

2564512844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79216 (or 79214 counting only the distinct ones).

The product of its digits is 307200, while the sum is 41.

The square root of 2564512844 is about 50641.0193815251. The cubic root of 2564512844 is about 1368.7841244900.

The spelling of 2564512844 in words is "two billion, five hundred sixty-four million, five hundred twelve thousand, eight hundred forty-four".