391568422472 has 32 divisors (see below), whose sum is σ = 777443533920. Its totient is φ = 184252074240.

The previous prime is 391568422459. The next prime is 391568422477. The reversal of 391568422472 is 274224865193.

It is not an unprimeable number, because it can be changed into a prime (391568422477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600943 + ... + 1829249.

It is an arithmetic number, because the mean of its divisors is an integer number (24295110435).

Almost surely, 2^391568422472 is an apocalyptic number.

It is an amenable number.

391568422472 is a deficient number, since it is larger than the sum of its proper divisors (385875111448).

391568422472 is a wasteful number, since it uses less digits than its factorization.

391568422472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240941 (or 240937 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The spelling of 391568422472 in words is "three hundred ninety-one billion, five hundred sixty-eight million, four hundred twenty-two thousand, four hundred seventy-two".