394664660752 has 20 divisors (see below), whose sum is σ = 765548858880. Its totient is φ = 197103664928.

The previous prime is 394664660713. The next prime is 394664660773. The reversal of 394664660752 is 257066466493.

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, 14277352 + ... + 14304967.

It is an arithmetic number, because the mean of its divisors is an integer number (38277442944).

Almost surely, 2^394664660752 is an apocalyptic number.

It is an amenable number.

394664660752 is a deficient number, since it is larger than the sum of its proper divisors (370884198128).

394664660752 is a wasteful number, since it uses less digits than its factorization.

394664660752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28583190 (or 28583184 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 58.

The spelling of 394664660752 in words is "three hundred ninety-four billion, six hundred sixty-four million, six hundred sixty thousand, seven hundred fifty-two".