665152013616 has 20 divisors (see below), whose sum is σ = 1718309368632. Its totient is φ = 221717337856.

The previous prime is 665152013609. The next prime is 665152013651. The reversal of 665152013616 is 616310251566.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6928666761 + ... + 6928666856.

Almost surely, 2^665152013616 is an apocalyptic number.

It is an amenable number.

665152013616 is an abundant number, since it is smaller than the sum of its proper divisors (1053157355016).

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

665152013616 is a wasteful number, since it uses less digits than its factorization.

665152013616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13857333628 (or 13857333622 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 665152013616 in words is "six hundred sixty-five billion, one hundred fifty-two million, thirteen thousand, six hundred sixteen".