20331501338564 has 48 divisors (see below), whose sum is σ = 40042080062208. Its totient is φ = 8962521330048.

The previous prime is 20331501338513. The next prime is 20331501338569. The reversal of 20331501338564 is 46583310513302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20331501338569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11745392 + ... + 13364775.

It is an arithmetic number, because the mean of its divisors is an integer number (834210001296).

Almost surely, 2^{20331501338564} is an apocalyptic number.

It is an amenable number.

20331501338564 is a deficient number, since it is larger than the sum of its proper divisors (19710578723644).

20331501338564 is a wasteful number, since it uses less digits than its factorization.

20331501338564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25110884 (or 25110882 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 20331501338564 in words is "twenty trillion, three hundred thirty-one billion, five hundred one million, three hundred thirty-eight thousand, five hundred sixty-four".