2564542366 has 32 divisors (see below), whose sum is σ = 4238357760. Its totient is φ = 1158385536.

The previous prime is 2564542349. The next prime is 2564542367. The reversal of 2564542366 is 6632454652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564542367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290185 + ... + 298891.

It is an arithmetic number, because the mean of its divisors is an integer number (132448680).

Almost surely, 2^2564542366 is an apocalyptic number.

2564542366 is a deficient number, since it is larger than the sum of its proper divisors (1673815394).

2564542366 is a wasteful number, since it uses less digits than its factorization.

2564542366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088.

The product of its digits is 1036800, while the sum is 43.

The square root of 2564542366 is about 50641.3108637602. The cubic root of 2564542366 is about 1368.7893768312.

The spelling of 2564542366 in words is "two billion, five hundred sixty-four million, five hundred forty-two thousand, three hundred sixty-six".