20331232412320 has 24 divisors (see below), whose sum is σ = 48032536574484. Its totient is φ = 8132492964864.

The previous prime is 20331232412317. The next prime is 20331232412341. The reversal of 20331232412320 is 2321423213302.

It can be written as a sum of positive squares in 2 ways, for example, as 20176949999376 + 154282412944 = 4491876^2 + 392788^2 .

It is a super-2 number, since 2×20331232412320² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63535101129 + ... + 63535101448.

Almost surely, 2^{20331232412320} is an apocalyptic number.

20331232412320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331232412320 is an abundant number, since it is smaller than the sum of its proper divisors (27701304162164).

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

20331232412320 is a wasteful number, since it uses less digits than its factorization.

20331232412320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127070202592 (or 127070202584 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20331232412320 its reverse (2321423213302), we get a palindrome (22652655625622).

The spelling of 20331232412320 in words is "twenty trillion, three hundred thirty-one billion, two hundred thirty-two million, four hundred twelve thousand, three hundred twenty".