397580508863 has 4 divisors (see below), whose sum is σ = 414866617968. Its totient is φ = 380294399760.

The previous prime is 397580508859. The next prime is 397580508877. The reversal of 397580508863 is 368805085793.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 397580508863 - 2² = 397580508859 is a prime.

It is a super-2 number, since 2×397580508863² (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 = 397580508796 and 397580508805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397580508763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643054518 + ... + 8643054563.

It is an arithmetic number, because the mean of its divisors is an integer number (103716654492).

Almost surely, 2^397580508863 is an apocalyptic number.

397580508863 is a deficient number, since it is larger than the sum of its proper divisors (17286109105).

397580508863 is a wasteful number, since it uses less digits than its factorization.

397580508863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17286109104.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 397580508863 in words is "three hundred ninety-seven billion, five hundred eighty million, five hundred eight thousand, eight hundred sixty-three".