397064277504 has 160 divisors (see below), whose sum is σ = 1183799232000. Its totient is φ = 131401930752.

The previous prime is 397064277479. The next prime is 397064277529. The reversal of 397064277504 is 405772460793.

397064277504 is a `hidden beast` number, since 3 + 9 + 7 + 0 + 64 + 2 + 77 + 504 = 666.

It is an interprime number because it is at equal distance from previous prime (397064277479) and next prime (397064277529).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 1818217 + ... + 2024855.

It is an arithmetic number, because the mean of its divisors is an integer number (7398745200).

Almost surely, 2^397064277504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397064277504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591899616000).

397064277504 is an abundant number, since it is smaller than the sum of its proper divisors (786734954496).

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

397064277504 is a wasteful number, since it uses less digits than its factorization.

397064277504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206805 (or 206783 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 397064277504 in words is "three hundred ninety-seven billion, sixty-four million, two hundred seventy-seven thousand, five hundred four".