16165566560660 has 48 divisors (see below), whose sum is σ = 37036611605952. Its totient is φ = 5877948441600.

The previous prime is 16165566560659. The next prime is 16165566560669. The reversal of 16165566560660 is 6606566556161.

It is a happy number.

It is a super-2 number, since 2×16165566560660² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16165566560660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165566560669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210884 + ... + 5689956.

It is an arithmetic number, because the mean of its divisors is an integer number (771596075124).

Almost surely, 2^{16165566560660} is an apocalyptic number.

16165566560660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16165566560660 is an abundant number, since it is smaller than the sum of its proper divisors (20871045045292).

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

16165566560660 is a wasteful number, since it uses less digits than its factorization.

16165566560660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492504 (or 5492502 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 59.

The spelling of 16165566560660 in words is "sixteen trillion, one hundred sixty-five billion, five hundred sixty-six million, five hundred sixty thousand, six hundred sixty".