666912476315 has 8 divisors (see below), whose sum is σ = 813414561648. Its totient is φ = 524783587680.

The previous prime is 666912476311. The next prime is 666912476323. The reversal of 666912476315 is 513674219666.

666912476315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 666912476315 - 2² = 666912476311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666912476311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093298837 + ... + 1093299446.

It is an arithmetic number, because the mean of its divisors is an integer number (101676820206).

Almost surely, 2^666912476315 is an apocalyptic number.

666912476315 is a deficient number, since it is larger than the sum of its proper divisors (146502085333).

666912476315 is a wasteful number, since it uses less digits than its factorization.

666912476315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186598349.

The product of its digits is 9797760, while the sum is 56.

The spelling of 666912476315 in words is "six hundred sixty-six billion, nine hundred twelve million, four hundred seventy-six thousand, three hundred fifteen".