665188015014 has 24 divisors (see below), whose sum is σ = 1441768539432. Its totient is φ = 221648132160.

The previous prime is 665188014979. The next prime is 665188015033. The reversal of 665188015014 is 410510881566.

665188015014 is a `hidden beast` number, since 6 + 6 + 518 + 80 + 1 + 50 + 1 + 4 = 666.

665188015014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 6716659 + ... + 6814974.

It is an arithmetic number, because the mean of its divisors is an integer number (60073689143).

Almost surely, 2^665188015014 is an apocalyptic number.

665188015014 is an abundant number, since it is smaller than the sum of its proper divisors (776580524418).

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

665188015014 is a wasteful number, since it uses less digits than its factorization.

665188015014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13534372 (or 13534369 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 665188015014 in words is "six hundred sixty-five billion, one hundred eighty-eight million, fifteen thousand, fourteen".