16805755568 has 40 divisors (see below), whose sum is σ = 37505789952. Its totient is φ = 7145748288.

The previous prime is 16805755513. The next prime is 16805755583. The reversal of 16805755568 is 86555750861.

It is a super-2 number, since 2×16805755568² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 576530 + ... + 604977.

Almost surely, 2^16805755568 is an apocalyptic number.

It is an amenable number.

16805755568 is an abundant number, since it is smaller than the sum of its proper divisors (20700034384).

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

16805755568 is a wasteful number, since it uses less digits than its factorization.

16805755568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181649 (or 1181643 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 56.

The spelling of 16805755568 in words is "sixteen billion, eight hundred five million, seven hundred fifty-five thousand, five hundred sixty-eight".