8657538872 has 8 divisors (see below), whose sum is σ = 16232885400. Its totient is φ = 4328769432.

The previous prime is 8657538863. The next prime is 8657538893. The reversal of 8657538872 is 2788357568.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541096172 + ... + 541096187.

It is an arithmetic number, because the mean of its divisors is an integer number (2029110675).

Almost surely, 2^8657538872 is an apocalyptic number.

It is an amenable number.

8657538872 is a deficient number, since it is larger than the sum of its proper divisors (7575346528).

8657538872 is a wasteful number, since it uses less digits than its factorization.

8657538872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082192365 (or 1082192361 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 59.

The square root of 8657538872 is about 93045.8965887266. The cubic root of 8657538872 is about 2053.3586720557.

The spelling of 8657538872 in words is "eight billion, six hundred fifty-seven million, five hundred thirty-eight thousand, eight hundred seventy-two".