331864344464 has 20 divisors (see below), whose sum is σ = 658669782540. Its totient is φ = 161885045760.

The previous prime is 331864344367. The next prime is 331864344593. The reversal of 331864344464 is 464443468133.

It can be written as a sum of positive squares in 2 ways, for example, as 196213561600 + 135650782864 = 442960^2 + 368308^2 .

It is a super-2 number, since 2×331864344464² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252944729 + ... + 252946040.

It is an arithmetic number, because the mean of its divisors is an integer number (32933489127).

Almost surely, 2^331864344464 is an apocalyptic number.

It is an amenable number.

331864344464 is a deficient number, since it is larger than the sum of its proper divisors (326805438076).

331864344464 is a wasteful number, since it uses less digits than its factorization.

331864344464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505890818 (or 505890812 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 50.

The spelling of 331864344464 in words is "three hundred thirty-one billion, eight hundred sixty-four million, three hundred forty-four thousand, four hundred sixty-four".