20317345767789 has 16 divisors (see below), whose sum is σ = 30964451094528. Its totient is φ = 11608154574192.

The previous prime is 20317345767773. The next prime is 20317345767821. The reversal of 20317345767789 is 98776754371302.

It is not a de Polignac number, because 20317345767789 - 2⁴ = 20317345767773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20317345762789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73078497 + ... + 73355990.

It is an arithmetic number, because the mean of its divisors is an integer number (1935278193408).

It is a 1-persistent number, because it is pandigital, but 2⋅20317345767789 = 40634691535578 is not.

Almost surely, 2^{20317345767789} is an apocalyptic number.

It is an amenable number.

20317345767789 is a deficient number, since it is larger than the sum of its proper divisors (10647105326739).

20317345767789 is a wasteful number, since it uses less digits than its factorization.

20317345767789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146441104.

The product of its (nonzero) digits is 373403520, while the sum is 69.

The spelling of 20317345767789 in words is "twenty trillion, three hundred seventeen billion, three hundred forty-five million, seven hundred sixty-seven thousand, seven hundred eighty-nine".