399318570688 has 28 divisors (see below), whose sum is σ = 795102255360. Its totient is φ = 198977844992.

The previous prime is 399318570683. The next prime is 399318570719. The reversal of 399318570688 is 886075813993.

It is not an unprimeable number, because it can be changed into a prime (399318570683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10628608 + ... + 10666111.

It is an arithmetic number, because the mean of its divisors is an integer number (28396509120).

Almost surely, 2^399318570688 is an apocalyptic number.

It is an amenable number.

399318570688 is a deficient number, since it is larger than the sum of its proper divisors (395783684672).

399318570688 is a wasteful number, since it uses less digits than its factorization.

399318570688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21295024 (or 21295014 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 399318570688 in words is "three hundred ninety-nine billion, three hundred eighteen million, five hundred seventy thousand, six hundred eighty-eight".