16560017680 has 40 divisors (see below), whose sum is σ = 38805230592. Its totient is φ = 6571845504.

The previous prime is 16560017659. The next prime is 16560017699. The reversal of 16560017680 is 8671006561.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 804802 + ... + 825121.

Almost surely, 2^16560017680 is an apocalyptic number.

16560017680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16560017680 is an abundant number, since it is smaller than the sum of its proper divisors (22245212912).

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

16560017680 is a wasteful number, since it uses less digits than its factorization.

16560017680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630063 (or 1630057 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 16560017680 in words is "sixteen billion, five hundred sixty million, seventeen thousand, six hundred eighty".