667512460520264 has 16 divisors (see below), whose sum is σ = 1251586205803500. Its totient is φ = 333756138972672.

The previous prime is 667512460520249. The next prime is 667512460520299. The reversal of 667512460520264 is 462025064215766.

It can be written as a sum of positive squares in 2 ways, for example, as 639695886684100 + 27816573836164 = 25292210^2 + 5274142^2 .

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, 27451484 + ... + 45701300.

Almost surely, 2^{667512460520264} is an apocalyptic number.

It is an amenable number.

667512460520264 is a deficient number, since it is larger than the sum of its proper divisors (584073745283236).

667512460520264 is a wasteful number, since it uses less digits than its factorization.

667512460520264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22821872 (or 22821868 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 56.

The spelling of 667512460520264 in words is "six hundred sixty-seven trillion, five hundred twelve billion, four hundred sixty million, five hundred twenty thousand, two hundred sixty-four".