397121071264 has 24 divisors (see below), whose sum is σ = 785276317728. Its totient is φ = 197685816000.

The previous prime is 397121071231. The next prime is 397121071271. The reversal of 397121071264 is 462170121793.

It is a self number, because there is not a number n which added to its sum of digits gives 397121071264.

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, 27327612 + ... + 27342139.

It is an arithmetic number, because the mean of its divisors is an integer number (32719846572).

Almost surely, 2^397121071264 is an apocalyptic number.

It is an amenable number.

397121071264 is a deficient number, since it is larger than the sum of its proper divisors (388155246464).

397121071264 is a wasteful number, since it uses less digits than its factorization.

397121071264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54669988 (or 54669980 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 397121071264 in words is "three hundred ninety-seven billion, one hundred twenty-one million, seventy-one thousand, two hundred sixty-four".