668080734734 has 32 divisors (see below), whose sum is σ = 1150011862272. Its totient is φ = 285138000000.

The previous prime is 668080734731. The next prime is 668080734749. The reversal of 668080734734 is 437437080866.

It is a self number, because there is not a number n which added to its sum of digits gives 668080734734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668080734731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43569449 + ... + 43584779.

It is an arithmetic number, because the mean of its divisors is an integer number (35937870696).

Almost surely, 2^668080734734 is an apocalyptic number.

668080734734 is a deficient number, since it is larger than the sum of its proper divisors (481931127538).

668080734734 is a wasteful number, since it uses less digits than its factorization.

668080734734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27992.

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 668080734734 in words is "six hundred sixty-eight billion, eighty million, seven hundred thirty-four thousand, seven hundred thirty-four".