667706874011 has 16 divisors (see below), whose sum is σ = 681985953600. Its totient is φ = 653569233408.

The previous prime is 667706873987. The next prime is 667706874017. The reversal of 667706874011 is 110478607766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667706874011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667706874017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47587745 + ... + 47601773.

It is an arithmetic number, because the mean of its divisors is an integer number (42624122100).

Almost surely, 2^667706874011 is an apocalyptic number.

667706874011 is a deficient number, since it is larger than the sum of its proper divisors (14279079589).

667706874011 is a wasteful number, since it uses less digits than its factorization.

667706874011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18998.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 667706874011 in words is "six hundred sixty-seven billion, seven hundred six million, eight hundred seventy-four thousand, eleven".