20317345767790 has 8 divisors (see below), whose sum is σ = 36571222382040. Its totient is φ = 8126938307112.

The previous prime is 20317345767773. The next prime is 20317345767821. The reversal of 20317345767790 is 9776754371302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015867288380 + ... + 1015867288399.

It is an arithmetic number, because the mean of its divisors is an integer number (4571402797755).

Almost surely, 2^{20317345767790} is an apocalyptic number.

20317345767790 is a deficient number, since it is larger than the sum of its proper divisors (16253876614250).

20317345767790 is a wasteful number, since it uses less digits than its factorization.

20317345767790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031734576786.

The product of its (nonzero) digits is 46675440, while the sum is 61.

The spelling of 20317345767790 in words is "twenty trillion, three hundred seventeen billion, three hundred forty-five million, seven hundred sixty-seven thousand, seven hundred ninety".