668531052795 has 16 divisors (see below), whose sum is σ = 1069660099872. Its totient is φ = 356546423040.

The previous prime is 668531052781. The next prime is 668531052851. The reversal of 668531052795 is 597250135866.

It is not a de Polignac number, because 668531052795 - 2⁷ = 668531052667 is a prime.

It is an unprimeable number.

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, 2369049 + ... + 2636181.

It is an arithmetic number, because the mean of its divisors is an integer number (66853756242).

Almost surely, 2^668531052795 is an apocalyptic number.

668531052795 is a deficient number, since it is larger than the sum of its proper divisors (401129047077).

668531052795 is a wasteful number, since it uses less digits than its factorization.

668531052795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433982.

The product of its (nonzero) digits is 13608000, while the sum is 57.

The spelling of 668531052795 in words is "six hundred sixty-eight billion, five hundred thirty-one million, fifty-two thousand, seven hundred ninety-five".