666653242504 has 16 divisors (see below), whose sum is σ = 1249984324620. Its totient is φ = 333324089280.

The previous prime is 666653242487. The next prime is 666653242513. The reversal of 666653242504 is 405242356666.

It can be written as a sum of positive squares in 2 ways, for example, as 666459976900 + 193265604 = 816370^2 + 13902^2 .

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, 1270734 + ... + 1716994.

Almost surely, 2^666653242504 is an apocalyptic number.

It is an amenable number.

666653242504 is a deficient number, since it is larger than the sum of its proper divisors (583331082116).

666653242504 is a wasteful number, since it uses less digits than its factorization.

666653242504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633000 (or 632996 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 666653242504 in words is "six hundred sixty-six billion, six hundred fifty-three million, two hundred forty-two thousand, five hundred four".