667740336420475 has 6 divisors (see below), whose sum is σ = 827998017161420. Its totient is φ = 534192269136360.

The previous prime is 667740336420413. The next prime is 667740336420511. The reversal of 667740336420475 is 574024633047766.

It is not a de Polignac number, because 667740336420475 - 2⁹ = 667740336419963 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13354806728385 + ... + 13354806728434.

Almost surely, 2^{667740336420475} is an apocalyptic number.

667740336420475 is a deficient number, since it is larger than the sum of its proper divisors (160257680740945).

667740336420475 is a wasteful number, since it uses less digits than its factorization.

667740336420475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26709613456829 (or 26709613456824 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 64.

The spelling of 667740336420475 in words is "six hundred sixty-seven trillion, seven hundred forty billion, three hundred thirty-six million, four hundred twenty thousand, four hundred seventy-five".