16516683904 has 64 divisors (see below), whose sum is σ = 38479573440. Its totient is φ = 6913944576.

The previous prime is 16516683901. The next prime is 16516683923. The reversal of 16516683904 is 40938661561.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16516683901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175819 + ... + 252874.

It is an arithmetic number, because the mean of its divisors is an integer number (601243335).

Almost surely, 2^16516683904 is an apocalyptic number.

16516683904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16516683904 is an abundant number, since it is smaller than the sum of its proper divisors (21962889536).

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

16516683904 is an equidigital number, since it uses as much as digits as its factorization.

16516683904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428757 (or 428745 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 16516683904 in words is "sixteen billion, five hundred sixteen million, six hundred eighty-three thousand, nine hundred four".