16564362508 has 6 divisors (see below), whose sum is σ = 28987634396. Its totient is φ = 8282181252.

The previous prime is 16564362461. The next prime is 16564362511. The reversal of 16564362508 is 80526346561.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070545310 + ... + 2070545317.

Almost surely, 2^16564362508 is an apocalyptic number.

It is an amenable number.

16564362508 is a deficient number, since it is larger than the sum of its proper divisors (12423271888).

16564362508 is a wasteful number, since it uses less digits than its factorization.

16564362508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141090631 (or 4141090629 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

It can be divided in two parts, 1656436 and 2508, that added together give a square (1658944 = 1288²).

The spelling of 16564362508 in words is "sixteen billion, five hundred sixty-four million, three hundred sixty-two thousand, five hundred eight".