397125899757 has 24 divisors (see below), whose sum is σ = 576958252728. Its totient is φ = 263214489600.

The previous prime is 397125899693. The next prime is 397125899761. The reversal of 397125899757 is 757998521793.

397125899757 is a `hidden beast` number, since 39 + 7 + 1 + 2 + 589 + 9 + 7 + 5 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 290157156 + 396835742601 = 17034^2 + 629949^2 .

It is not a de Polignac number, because 397125899757 - 2⁶ = 397125899693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397125899767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2745157 + ... + 2886197.

It is an arithmetic number, because the mean of its divisors is an integer number (24039927197).

Almost surely, 2^397125899757 is an apocalyptic number.

It is an amenable number.

397125899757 is a deficient number, since it is larger than the sum of its proper divisors (179832352971).

397125899757 is a wasteful number, since it uses less digits than its factorization.

397125899757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142861 (or 142858 counting only the distinct ones).

The product of its digits is 300056400, while the sum is 72.

The spelling of 397125899757 in words is "three hundred ninety-seven billion, one hundred twenty-five million, eight hundred ninety-nine thousand, seven hundred fifty-seven".