20698245545685 has 8 divisors (see below), whose sum is σ = 33117192873120. Its totient is φ = 11039064291024.

The previous prime is 20698245545629. The next prime is 20698245545701. The reversal of 20698245545685 is 58654554289602.

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

It is not a de Polignac number, because 20698245545685 - 2¹⁰ = 20698245544661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689941518175 + ... + 689941518204.

It is an arithmetic number, because the mean of its divisors is an integer number (4139649109140).

Almost surely, 2^{20698245545685} is an apocalyptic number.

It is an amenable number.

20698245545685 is a deficient number, since it is larger than the sum of its proper divisors (12418947327435).

20698245545685 is a wasteful number, since it uses less digits than its factorization.

20698245545685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379883036387.

The product of its (nonzero) digits is 829440000, while the sum is 69.

The spelling of 20698245545685 in words is "twenty trillion, six hundred ninety-eight billion, two hundred forty-five million, five hundred forty-five thousand, six hundred eighty-five".