20317688966190 has 512 divisors, whose sum is σ = 63082890657792. Its totient is φ = 4064442624000.

The previous prime is 20317688966161. The next prime is 20317688966203. The reversal of 20317688966190 is 9166988671302.

It is a super-2 number, since 2×20317688966190² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 16424970252 + ... + 16424971488.

It is an arithmetic number, because the mean of its divisors is an integer number (123208770816).

Almost surely, 2^{20317688966190} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20317688966190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31541445328896).

20317688966190 is an abundant number, since it is smaller than the sum of its proper divisors (42765201691602).

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

20317688966190 is a wasteful number, since it uses less digits than its factorization.

20317688966190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304.

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 20317688966190 in words is "twenty trillion, three hundred seventeen billion, six hundred eighty-eight million, nine hundred sixty-six thousand, one hundred ninety".