16534376664 has 96 divisors (see below), whose sum is σ = 47288487120. Its totient is φ = 4788209664.

The previous prime is 16534376623. The next prime is 16534376671. The reversal of 16534376664 is 46667343561.

It is a super-2 number, since 2×16534376664² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519 + ... + 181854.

Almost surely, 2^16534376664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16534376664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23644243560).

16534376664 is an abundant number, since it is smaller than the sum of its proper divisors (30754110456).

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

16534376664 is a wasteful number, since it uses less digits than its factorization.

16534376664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183429 (or 183408 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 51.

The spelling of 16534376664 in words is "sixteen billion, five hundred thirty-four million, three hundred seventy-six thousand, six hundred sixty-four".