397518216511432 has 32 divisors (see below), whose sum is σ = 745505570606400. Its totient is φ = 198716735191104.

The previous prime is 397518216511379. The next prime is 397518216511433. The reversal of 397518216511432 is 234115612815793.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (397518216511433) 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, 793378093 + ... + 793878979.

It is an arithmetic number, because the mean of its divisors is an integer number (23297049081450).

Almost surely, 2^{397518216511432} is an apocalyptic number.

It is an amenable number.

397518216511432 is a deficient number, since it is larger than the sum of its proper divisors (347987354094968).

397518216511432 is a wasteful number, since it uses less digits than its factorization.

397518216511432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521845 (or 521841 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 397518216511432 in words is "three hundred ninety-seven trillion, five hundred eighteen billion, two hundred sixteen million, five hundred eleven thousand, four hundred thirty-two".