16375505664 has 72 divisors (see below), whose sum is σ = 49808846080. Its totient is φ = 4678714368.

The previous prime is 16375505651. The next prime is 16375505717. The reversal of 16375505664 is 46650557361.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517644 + ... + 1528395.

Almost surely, 2^16375505664 is an apocalyptic number.

16375505664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16375505664 is an abundant number, since it is smaller than the sum of its proper divisors (33433340416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16375505664 is an equidigital number, since it uses as much as digits as its factorization.

16375505664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046065 (or 3046051 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 16375505664 in words is "sixteen billion, three hundred seventy-five million, five hundred five thousand, six hundred sixty-four".