20338118368 has 72 divisors (see below), whose sum is σ = 44384345712. Its totient is φ = 9154658304.

The previous prime is 20338118321. The next prime is 20338118387. The reversal of 20338118368 is 86381183302.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164896 + ... + 260512.

It is an arithmetic number, because the mean of its divisors is an integer number (616449246).

Almost surely, 2^20338118368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20338118368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22192172856).

20338118368 is an abundant number, since it is smaller than the sum of its proper divisors (24046227344).

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

20338118368 is a wasteful number, since it uses less digits than its factorization.

20338118368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95684 (or 95659 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 20338118368 in words is "twenty billion, three hundred thirty-eight million, one hundred eighteen thousand, three hundred sixty-eight".