16500505560 has 128 divisors (see below), whose sum is σ = 61716211200. Its totient is φ = 3428674560.

The previous prime is 16500505543. The next prime is 16500505649. The reversal of 16500505560 is 6550500561.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883645 + ... + 902124.

It is an arithmetic number, because the mean of its divisors is an integer number (482157900).

Almost surely, 2^16500505560 is an apocalyptic number.

16500505560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16500505560 is an abundant number, since it is smaller than the sum of its proper divisors (45215705640).

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

16500505560 is a wasteful number, since it uses less digits than its factorization.

16500505560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785801 (or 1785797 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 16500505560 in words is "sixteen billion, five hundred million, five hundred five thousand, five hundred sixty".