16521560104 has 48 divisors (see below), whose sum is σ = 36873619200. Its totient is φ = 6915994848.

The previous prime is 16521560057. The next prime is 16521560113. The reversal of 16521560104 is 40106512561.

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, 473224 + ... + 506935.

It is an arithmetic number, because the mean of its divisors is an integer number (768200400).

Almost surely, 2^16521560104 is an apocalyptic number.

16521560104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16521560104 is an abundant number, since it is smaller than the sum of its proper divisors (20352059096).

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

16521560104 is a wasteful number, since it uses less digits than its factorization.

16521560104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980222 (or 980211 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 16521560104 in words is "sixteen billion, five hundred twenty-one million, five hundred sixty thousand, one hundred four".