16561607160 has 64 divisors (see below), whose sum is σ = 56782656000. Its totient is φ = 3785510016.

The previous prime is 16561607159. The next prime is 16561607173. The reversal of 16561607160 is 6170616561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9857260 + ... + 9858939.

It is an arithmetic number, because the mean of its divisors is an integer number (887229000).

Almost surely, 2^16561607160 is an apocalyptic number.

16561607160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16561607160 is an abundant number, since it is smaller than the sum of its proper divisors (40221048840).

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

16561607160 is a wasteful number, since it uses less digits than its factorization.

16561607160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716220 (or 19716216 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 16561607160 in words is "sixteen billion, five hundred sixty-one million, six hundred seven thousand, one hundred sixty".