20173472368 has 80 divisors (see below), whose sum is σ = 45057830400. Its totient is φ = 8570919168.

The previous prime is 20173472359. The next prime is 20173472387. The reversal of 20173472368 is 86327437102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12398371 + ... + 12399997.

It is an arithmetic number, because the mean of its divisors is an integer number (563222880).

Almost surely, 2^20173472368 is an apocalyptic number.

20173472368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20173472368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22528915200).

20173472368 is an abundant number, since it is smaller than the sum of its proper divisors (24884358032).

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

20173472368 is a wasteful number, since it uses less digits than its factorization.

20173472368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 20173472368 in words is "twenty billion, one hundred seventy-three million, four hundred seventy-two thousand, three hundred sixty-eight".