20317354080 has 96 divisors (see below), whose sum is σ = 64062835200. Its totient is φ = 5412613632.

The previous prime is 20317354073. The next prime is 20317354081. The reversal of 20317354080 is 8045371302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20317354081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478351 + ... + 519089.

It is an arithmetic number, because the mean of its divisors is an integer number (667321200).

Almost surely, 2^20317354080 is an apocalyptic number.

20317354080 is a gapful number since it is divisible by the number (20) 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 20317354080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32031417600).

20317354080 is an abundant number, since it is smaller than the sum of its proper divisors (43745481120).

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

20317354080 is a wasteful number, since it uses less digits than its factorization.

20317354080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41796 (or 41788 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 20317354080 in words is "twenty billion, three hundred seventeen million, three hundred fifty-four thousand, eighty".