20344517035717 has 32 divisors (see below), whose sum is σ = 23770623916800. Its totient is φ = 17053181849088.

The previous prime is 20344517035693. The next prime is 20344517035763. The reversal of 20344517035717 is 71753071544302.

It is not a de Polignac number, because 20344517035717 - 2¹⁵ = 20344517002949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344517005717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40614259 + ... + 41112127.

It is an arithmetic number, because the mean of its divisors is an integer number (742831997400).

Almost surely, 2^{20344517035717} is an apocalyptic number.

It is an amenable number.

20344517035717 is a deficient number, since it is larger than the sum of its proper divisors (3426106881083).

20344517035717 is a wasteful number, since it uses less digits than its factorization.

20344517035717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498685.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 20344517035717 in words is "twenty trillion, three hundred forty-four billion, five hundred seventeen million, thirty-five thousand, seven hundred seventeen".