668503275951 has 12 divisors (see below), whose sum is σ = 1036862224152. Its totient is φ = 382001871888.

The previous prime is 668503275943. The next prime is 668503275953. The reversal of 668503275951 is 159572305866.

It is not a de Polignac number, because 668503275951 - 2³ = 668503275943 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 668503275891 and 668503275900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668503275953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2273820520 + ... + 2273820813.

It is an arithmetic number, because the mean of its divisors is an integer number (86405185346).

Almost surely, 2^668503275951 is an apocalyptic number.

668503275951 is a deficient number, since it is larger than the sum of its proper divisors (368358948201).

668503275951 is a wasteful number, since it uses less digits than its factorization.

668503275951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547641350 (or 4547641343 counting only the distinct ones).

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

The spelling of 668503275951 in words is "six hundred sixty-eight billion, five hundred three million, two hundred seventy-five thousand, nine hundred fifty-one".