20337664772432 has 40 divisors (see below), whose sum is σ = 45081462060096. Its totient is φ = 8706839821056.

The previous prime is 20337664772423. The next prime is 20337664772443. The reversal of 20337664772432 is 23427746673302.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96792758 + ... + 97002645.

Almost surely, 2^{20337664772432} is an apocalyptic number.

It is an amenable number.

20337664772432 is an abundant number, since it is smaller than the sum of its proper divisors (24743797287664).

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

20337664772432 is a wasteful number, since it uses less digits than its factorization.

20337664772432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193796355 (or 193796349 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 56.

The spelling of 20337664772432 in words is "twenty trillion, three hundred thirty-seven billion, six hundred sixty-four million, seven hundred seventy-two thousand, four hundred thirty-two".