16607645720 has 32 divisors (see below), whose sum is σ = 37453540320. Its totient is φ = 6627709440.

The previous prime is 16607645701. The next prime is 16607645749. The reversal of 16607645720 is 2754670661.

It is a super-2 number, since 2×16607645720² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 462116 + ... + 496755.

It is an arithmetic number, because the mean of its divisors is an integer number (1170423135).

Almost surely, 2^16607645720 is an apocalyptic number.

16607645720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16607645720 is an abundant number, since it is smaller than the sum of its proper divisors (20845894600).

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

16607645720 is a wasteful number, since it uses less digits than its factorization.

16607645720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959315 (or 959311 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 16607645720 in words is "sixteen billion, six hundred seven million, six hundred forty-five thousand, seven hundred twenty".