20317008360220 has 576 divisors, whose sum is σ = 53699388825600. Its totient is φ = 6388394987520.

The previous prime is 20317008360211. The next prime is 20317008360223. The reversal of 20317008360220 is 2206380071302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20317008360223) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 24215742561 + ... + 24215743399.

It is an arithmetic number, because the mean of its divisors is an integer number (93228105600).

Almost surely, 2^{20317008360220} is an apocalyptic number.

20317008360220 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 20317008360220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26849694412800).

20317008360220 is an abundant number, since it is smaller than the sum of its proper divisors (33382380465380).

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

20317008360220 is a wasteful number, since it uses less digits than its factorization.

20317008360220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 20317008360220 in words is "twenty trillion, three hundred seventeen billion, eight million, three hundred sixty thousand, two hundred twenty".