20373939168 has 48 divisors (see below), whose sum is σ = 58343556096. Its totient is φ = 6173920640.

The previous prime is 20373939163. The next prime is 20373939169. The reversal of 20373939168 is 86193937302.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20373939168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373939163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9645696 + ... + 9647807.

It is an arithmetic number, because the mean of its divisors is an integer number (1215490752).

Almost surely, 2^20373939168 is an apocalyptic number.

It is an amenable number.

20373939168 is an abundant number, since it is smaller than the sum of its proper divisors (37969616928).

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

20373939168 is a wasteful number, since it uses less digits than its factorization.

20373939168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19293527 (or 19293519 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The spelling of 20373939168 in words is "twenty billion, three hundred seventy-three million, nine hundred thirty-nine thousand, one hundred sixty-eight".