660276220164 has 24 divisors (see below), whose sum is σ = 1680703106208. Its totient is φ = 200083703040.

The previous prime is 660276220159. The next prime is 660276220231. The reversal of 660276220164 is 461022672066.

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, 2501046157 + ... + 2501046420.

It is an arithmetic number, because the mean of its divisors is an integer number (70029296092).

Almost surely, 2^660276220164 is an apocalyptic number.

It is an amenable number.

660276220164 is an abundant number, since it is smaller than the sum of its proper divisors (1020426886044).

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

660276220164 is a wasteful number, since it uses less digits than its factorization.

660276220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002092595 (or 5002092593 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 660276220164 in words is "six hundred sixty billion, two hundred seventy-six million, two hundred twenty thousand, one hundred sixty-four".