668361164512 has 12 divisors (see below), whose sum is σ = 1315836042696. Its totient is φ = 334180582240.

The previous prime is 668361164459. The next prime is 668361164551. The reversal of 668361164512 is 215461163866.

668361164512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10443143164 + ... + 10443143227.

It is an arithmetic number, because the mean of its divisors is an integer number (109653003558).

Almost surely, 2^668361164512 is an apocalyptic number.

It is an amenable number.

668361164512 is a deficient number, since it is larger than the sum of its proper divisors (647474878184).

668361164512 is a wasteful number, since it uses less digits than its factorization.

668361164512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20886286401 (or 20886286393 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The spelling of 668361164512 in words is "six hundred sixty-eight billion, three hundred sixty-one million, one hundred sixty-four thousand, five hundred twelve".