397912262455968 has 96 divisors (see below), whose sum is σ = 1129049021318400. Its totient is φ = 121979395193856.

The previous prime is 397912262455703. The next prime is 397912262455987. The reversal of 397912262455968 is 869554262219793.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×397912262455968² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a junction number, because it is equal to n+sod(n) for n = 397912262455893 and 397912262455902.

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, 592303608 + ... + 592975031.

It is an arithmetic number, because the mean of its divisors is an integer number (11760927305400).

Almost surely, 2^{397912262455968} is an apocalyptic number.

It is an amenable number.

397912262455968 is an abundant number, since it is smaller than the sum of its proper divisors (731136758862432).

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

397912262455968 is a wasteful number, since it uses less digits than its factorization.

397912262455968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185278934 (or 1185278926 counting only the distinct ones).

The product of its digits is 3527193600, while the sum is 78.

The spelling of 397912262455968 in words is "three hundred ninety-seven trillion, nine hundred twelve billion, two hundred sixty-two million, four hundred fifty-five thousand, nine hundred sixty-eight".