390846868552 has 64 divisors (see below), whose sum is σ = 841305553920. Its totient is φ = 166751305728.

The previous prime is 390846868549. The next prime is 390846868571. The reversal of 390846868552 is 255868648093.

It is a super-2 number, since 2×390846868552² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26229168 + ... + 26244064.

It is an arithmetic number, because the mean of its divisors is an integer number (13145399280).

Almost surely, 2^390846868552 is an apocalyptic number.

It is an amenable number.

390846868552 is an abundant number, since it is smaller than the sum of its proper divisors (450458685368).

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

390846868552 is a wasteful number, since it uses less digits than its factorization.

390846868552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16990 (or 16986 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 64.

The spelling of 390846868552 in words is "three hundred ninety billion, eight hundred forty-six million, eight hundred sixty-eight thousand, five hundred fifty-two".