668313751470 has 16 divisors (see below), whose sum is σ = 1603953003600. Its totient is φ = 178217000384.

The previous prime is 668313751439. The next prime is 668313751471. The reversal of 668313751470 is 74157313866.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668313751471) 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 7 ways as a sum of consecutive naturals, for example, 11138562495 + ... + 11138562554.

It is an arithmetic number, because the mean of its divisors is an integer number (100247062725).

Almost surely, 2^668313751470 is an apocalyptic number.

668313751470 is an abundant number, since it is smaller than the sum of its proper divisors (935639252130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668313751470 is a wasteful number, since it uses less digits than its factorization.

668313751470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22277125059.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 668313751470 in words is "six hundred sixty-eight billion, three hundred thirteen million, seven hundred fifty-one thousand, four hundred seventy".