16560066100 has 18 divisors (see below), whose sum is σ = 35935343654. Its totient is φ = 6624026400.

The previous prime is 16560066097. The next prime is 16560066139. The reversal of 16560066100 is 166006561.

It can be written as a sum of positive squares in 3 ways, for example, as 121749156 + 16438316944 = 11034^2 + 128212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82800231 + ... + 82800430.

Almost surely, 2^16560066100 is an apocalyptic number.

16560066100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16560066100 is an abundant number, since it is smaller than the sum of its proper divisors (19375277554).

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

16560066100 is a wasteful number, since it uses less digits than its factorization.

16560066100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165600675 (or 165600668 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 16560066100 in words is "sixteen billion, five hundred sixty million, sixty-six thousand, one hundred".