397875123765 has 240 divisors, whose sum is σ = 898940192832. Its totient is φ = 167199427584.

The previous prime is 397875123733. The next prime is 397875123773. The reversal of 397875123765 is 567321578793.

397875123765 is a `hidden beast` number, since 3 + 9 + 7 + 87 + 512 + 37 + 6 + 5 = 666.

It is not a de Polignac number, because 397875123765 - 2⁵ = 397875123733 is a prime.

It is a super-2 number, since 2×397875123765² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 14492982 + ... + 14520408.

Almost surely, 2^397875123765 is an apocalyptic number.

397875123765 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

397875123765 is an abundant number, since it is smaller than the sum of its proper divisors (501065069067).

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

397875123765 is a wasteful number, since it uses less digits than its factorization.

397875123765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27518 (or 27502 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 63.

The spelling of 397875123765 in words is "three hundred ninety-seven billion, eight hundred seventy-five million, one hundred twenty-three thousand, seven hundred sixty-five".