393551316664 has 32 divisors (see below), whose sum is σ = 826747858800. Its totient is φ = 174052177920.

The previous prime is 393551316623. The next prime is 393551316689. The reversal of 393551316664 is 466613155393.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60431529 + ... + 60438040.

Almost surely, 2^393551316664 is an apocalyptic number.

It is an amenable number.

393551316664 is an abundant number, since it is smaller than the sum of its proper divisors (433196542136).

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

393551316664 is a wasteful number, since it uses less digits than its factorization.

393551316664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120869623 (or 120869619 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 52.

The spelling of 393551316664 in words is "three hundred ninety-three billion, five hundred fifty-one million, three hundred sixteen thousand, six hundred sixty-four".