16716475638 has 24 divisors (see below), whose sum is σ = 37102423176. Its totient is φ = 5436252000.

The previous prime is 16716475627. The next prime is 16716475651. The reversal of 16716475638 is 83657461761.

16716475638 is a `hidden beast` number, since 1 + 6 + 71 + 6 + 4 + 7 + 563 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11324788 + ... + 11326263.

It is an arithmetic number, because the mean of its divisors is an integer number (1545934299).

Almost surely, 2^16716475638 is an apocalyptic number.

16716475638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16716475638 is an abundant number, since it is smaller than the sum of its proper divisors (20385947538).

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

16716475638 is a wasteful number, since it uses less digits than its factorization.

16716475638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22651100 (or 22651097 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 16716475638 in words is "sixteen billion, seven hundred sixteen million, four hundred seventy-five thousand, six hundred thirty-eight".