16435807568 has 20 divisors (see below), whose sum is σ = 32159671188. Its totient is φ = 8136537600.

The previous prime is 16435807547. The next prime is 16435807573. The reversal of 16435807568 is 86570853461.

It can be written as a sum of positive squares in 2 ways, for example, as 13180876864 + 3254930704 = 114808^2 + 57052^2 .

It is a super-3 number, since 3×16435807568³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5083721 + ... + 5086952.

Almost surely, 2^16435807568 is an apocalyptic number.

It is an amenable number.

16435807568 is a deficient number, since it is larger than the sum of its proper divisors (15723863620).

16435807568 is a wasteful number, since it uses less digits than its factorization.

16435807568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10170782 (or 10170776 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 16435807568 in words is "sixteen billion, four hundred thirty-five million, eight hundred seven thousand, five hundred sixty-eight".