665013670374006 has 32 divisors (see below), whose sum is σ = 1477824805468800. Its totient is φ = 221668726095720.

The previous prime is 665013670373953. The next prime is 665013670374029. The reversal of 665013670374006 is 600473076310566.

It is a happy number.

665013670374006 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 136 + 70 + 37 + 400 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

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, 64530540 + ... + 74122991.

It is an arithmetic number, because the mean of its divisors is an integer number (46182025170900).

Almost surely, 2^{665013670374006} is an apocalyptic number.

665013670374006 is an abundant number, since it is smaller than the sum of its proper divisors (812811135094794).

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

665013670374006 is a wasteful number, since it uses less digits than its factorization.

665013670374006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138742361 (or 138742355 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 54.

The spelling of 665013670374006 in words is "six hundred sixty-five trillion, thirteen billion, six hundred seventy million, three hundred seventy-four thousand, six".