397580508865 has 8 divisors (see below), whose sum is σ = 477117543168. Its totient is φ = 318050452080.

The previous prime is 397580508859. The next prime is 397580508877. The reversal of 397580508865 is 568805085793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397580508865 - 2⁷ = 397580508737 is a prime.

It is a super-2 number, since 2×397580508865² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397580508797 and 397580508806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618191 + ... + 1847620.

It is an arithmetic number, because the mean of its divisors is an integer number (59639692896).

Almost surely, 2^397580508865 is an apocalyptic number.

It is an amenable number.

397580508865 is a deficient number, since it is larger than the sum of its proper divisors (79537034303).

397580508865 is a wasteful number, since it uses less digits than its factorization.

397580508865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488759.

The product of its (nonzero) digits is 72576000, while the sum is 64.

The spelling of 397580508865 in words is "three hundred ninety-seven billion, five hundred eighty million, five hundred eight thousand, eight hundred sixty-five".