666675766013715 has 40 divisors (see below), whose sum is σ = 1196167446302400. Its totient is φ = 355236287603328.

The previous prime is 666675766013707. The next prime is 666675766013717. The reversal of 666675766013715 is 517310667576666.

It is not a de Polignac number, because 666675766013715 - 2³ = 666675766013707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666675766013717) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 749835115 + ... + 750723684.

It is an arithmetic number, because the mean of its divisors is an integer number (29904186157560).

Almost surely, 2^{666675766013715} is an apocalyptic number.

666675766013715 is a deficient number, since it is larger than the sum of its proper divisors (529491680288685).

666675766013715 is a wasteful number, since it uses less digits than its factorization.

666675766013715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500559913 (or 1500559904 counting only the distinct ones).

The product of its (nonzero) digits is 1200225600, while the sum is 72.

The spelling of 666675766013715 in words is "six hundred sixty-six trillion, six hundred seventy-five billion, seven hundred sixty-six million, thirteen thousand, seven hundred fifteen".