397518216519432 has 32 divisors (see below), whose sum is σ = 1007792661602880. Its totient is φ = 130639789465920.

The previous prime is 397518216519407. The next prime is 397518216519433. The reversal of 397518216519432 is 234915612815793.

It is not an unprimeable number, because it can be changed into a prime (397518216519433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116642667463 + ... + 116642670870.

It is an arithmetic number, because the mean of its divisors is an integer number (31493520675090).

Almost surely, 2^{397518216519432} is an apocalyptic number.

It is an amenable number.

397518216519432 is an abundant number, since it is smaller than the sum of its proper divisors (610274445083448).

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

397518216519432 is a wasteful number, since it uses less digits than its factorization.

397518216519432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233285338413 (or 233285338409 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 66.

The spelling of 397518216519432 in words is "three hundred ninety-seven trillion, five hundred eighteen billion, two hundred sixteen million, five hundred nineteen thousand, four hundred thirty-two".