668764044834 has 8 divisors (see below), whose sum is σ = 1337528089680. Its totient is φ = 222921348276.

The previous prime is 668764044821. The next prime is 668764044853. The reversal of 668764044834 is 438440467866.

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

668764044834 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55730337064 + ... + 55730337075.

It is an arithmetic number, because the mean of its divisors is an integer number (167191011210).

Almost surely, 2^668764044834 is an apocalyptic number.

668764044834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

668764044834 is a wasteful number, since it uses less digits than its factorization.

668764044834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111460674144.

The product of its (nonzero) digits is 74317824, while the sum is 60.

The spelling of 668764044834 in words is "six hundred sixty-eight billion, seven hundred sixty-four million, forty-four thousand, eight hundred thirty-four".