2564372517 has 12 divisors (see below), whose sum is σ = 3977394336. Its totient is φ = 1465355640.

The previous prime is 2564372509. The next prime is 2564372537. The reversal of 2564372517 is 7152734652.

It is not a de Polignac number, because 2564372517 - 2³ = 2564372509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564372537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8722209 + ... + 8722502.

It is an arithmetic number, because the mean of its divisors is an integer number (331449528).

Almost surely, 2^2564372517 is an apocalyptic number.

It is an amenable number.

2564372517 is a deficient number, since it is larger than the sum of its proper divisors (1413021819).

2564372517 is a wasteful number, since it uses less digits than its factorization.

2564372517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17444728 (or 17444721 counting only the distinct ones).

The product of its digits is 352800, while the sum is 42.

The square root of 2564372517 is about 50639.6338553114. The cubic root of 2564372517 is about 1368.7591579713.

The spelling of 2564372517 in words is "two billion, five hundred sixty-four million, three hundred seventy-two thousand, five hundred seventeen".