668725872064351 has 8 divisors (see below), whose sum is σ = 669071967346944. Its totient is φ = 668379788027040.

The previous prime is 668725872064331. The next prime is 668725872064363. The reversal of 668725872064351 is 153460278527866.

668725872064351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 668725872064351 - 2¹³ = 668725872056159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668725872064321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117485121 + ... + 123045541.

It is an arithmetic number, because the mean of its divisors is an integer number (83633995918368).

Almost surely, 2^{668725872064351} is an apocalyptic number.

668725872064351 is a deficient number, since it is larger than the sum of its proper divisors (346095282593).

668725872064351 is a wasteful number, since it uses less digits than its factorization.

668725872064351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622641.

The product of its (nonzero) digits is 812851200, while the sum is 70.

The spelling of 668725872064351 in words is "six hundred sixty-eight trillion, seven hundred twenty-five billion, eight hundred seventy-two million, sixty-four thousand, three hundred fifty-one".