397157832775 has 24 divisors (see below), whose sum is σ = 537287040000. Its totient is φ = 288820120800.

The previous prime is 397157832737. The next prime is 397157832787. The reversal of 397157832775 is 577238751793.

It is not a de Polignac number, because 397157832775 - 2²¹ = 397155735623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4160026 + ... + 4254424.

It is an arithmetic number, because the mean of its divisors is an integer number (22386960000).

Almost surely, 2^397157832775 is an apocalyptic number.

397157832775 is a deficient number, since it is larger than the sum of its proper divisors (140129207225).

397157832775 is a wasteful number, since it uses less digits than its factorization.

397157832775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109719 (or 109714 counting only the distinct ones).

The product of its digits is 77792400, while the sum is 64.

The spelling of 397157832775 in words is "three hundred ninety-seven billion, one hundred fifty-seven million, eight hundred thirty-two thousand, seven hundred seventy-five".