397507552965 has 12 divisors (see below), whose sum is σ = 689013091884. Its totient is φ = 212004028224.

The previous prime is 397507552957. The next prime is 397507552979. The reversal of 397507552965 is 569255705793.

It is a happy number.

397507552965 is a `hidden beast` number, since 3 + 9 + 75 + 0 + 7 + 552 + 9 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 238971389409 + 158536163556 = 488847^2 + 398166^2 .

It is not a de Polignac number, because 397507552965 - 2³ = 397507552957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4416750544 + ... + 4416750633.

It is an arithmetic number, because the mean of its divisors is an integer number (57417757657).

Almost surely, 2^397507552965 is an apocalyptic number.

It is an amenable number.

397507552965 is a deficient number, since it is larger than the sum of its proper divisors (291505538919).

397507552965 is a wasteful number, since it uses less digits than its factorization.

397507552965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8833501188 (or 8833501185 counting only the distinct ones).

The product of its (nonzero) digits is 89302500, while the sum is 63.

The spelling of 397507552965 in words is "three hundred ninety-seven billion, five hundred seven million, five hundred fifty-two thousand, nine hundred sixty-five".