16505162564 has 12 divisors (see below), whose sum is σ = 31509855888. Its totient is φ = 7502346600.

The previous prime is 16505162539. The next prime is 16505162567. The reversal of 16505162564 is 46526150561.

It is not an unprimeable number, because it can be changed into a prime (16505162567) 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, 187558622 + ... + 187558709.

It is an arithmetic number, because the mean of its divisors is an integer number (2625821324).

Almost surely, 2^16505162564 is an apocalyptic number.

It is an amenable number.

16505162564 is a deficient number, since it is larger than the sum of its proper divisors (15004693324).

16505162564 is a wasteful number, since it uses less digits than its factorization.

16505162564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375117346 (or 375117344 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 16505162564 in words is "sixteen billion, five hundred five million, one hundred sixty-two thousand, five hundred sixty-four".