666710011715 has 8 divisors (see below), whose sum is σ = 872784015408. Its totient is φ = 484880008480.

The previous prime is 666710011631. The next prime is 666710011727. The reversal of 666710011715 is 517110017666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666710011715 - 2²⁰ = 666708963139 is a prime.

It is a Duffinian number.

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, 6061000052 + ... + 6061000161.

It is an arithmetic number, because the mean of its divisors is an integer number (109098001926).

Almost surely, 2^666710011715 is an apocalyptic number.

666710011715 is a deficient number, since it is larger than the sum of its proper divisors (206074003693).

666710011715 is a wasteful number, since it uses less digits than its factorization.

666710011715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12122000229.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 666710011715 in words is "six hundred sixty-six billion, seven hundred ten million, eleven thousand, seven hundred fifteen".