320320040032 has 24 divisors (see below), whose sum is σ = 667725966936. Its totient is φ = 150738842112.

The previous prime is 320320040021. The next prime is 320320040057. The reversal of 320320040032 is 230040023023.

It is a super-2 number, since 2×320320040032² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320320039991 and 320320040009.

It is a congruent number.

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, 294411258 + ... + 294412345.

It is an arithmetic number, because the mean of its divisors is an integer number (27821915289).

Almost surely, 2^320320040032 is an apocalyptic number.

320320040032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320320040032 is an abundant number, since it is smaller than the sum of its proper divisors (347405926904).

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

320320040032 is a wasteful number, since it uses less digits than its factorization.

320320040032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588823630 (or 588823622 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 320320040032 its reverse (230040023023), we get a palindrome (550360063055).

The spelling of 320320040032 in words is "three hundred twenty billion, three hundred twenty million, forty thousand, thirty-two".