20365331316 has 96 divisors (see below), whose sum is σ = 54306201600. Its totient is φ = 5882997120.

The previous prime is 20365331299. The next prime is 20365331321. The reversal of 20365331316 is 61313356302.

It is a happy number.

It is a super-2 number, since 2×20365331316² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268741 + ... + 336083.

It is an arithmetic number, because the mean of its divisors is an integer number (565689600).

Almost surely, 2^20365331316 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 20365331316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27153100800).

20365331316 is an abundant number, since it is smaller than the sum of its proper divisors (33940870284).

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

20365331316 is a wasteful number, since it uses less digits than its factorization.

20365331316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67469 (or 67467 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 33.

Adding to 20365331316 its reverse (61313356302), we get a palindrome (81678687618).

The spelling of 20365331316 in words is "twenty billion, three hundred sixty-five million, three hundred thirty-one thousand, three hundred sixteen".