20698245545686 has 8 divisors (see below), whose sum is σ = 31051442264544. Its totient is φ = 10347764790840.

The previous prime is 20698245545629. The next prime is 20698245545701. The reversal of 20698245545686 is 68654554289602.

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, 678971950 + ... + 679002433.

It is an arithmetic number, because the mean of its divisors is an integer number (3881430283068).

Almost surely, 2^{20698245545686} is an apocalyptic number.

20698245545686 is a deficient number, since it is larger than the sum of its proper divisors (10353196718858).

20698245545686 is a wasteful number, since it uses less digits than its factorization.

20698245545686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357982006.

The product of its (nonzero) digits is 995328000, while the sum is 70.

The spelling of 20698245545686 in words is "twenty trillion, six hundred ninety-eight billion, two hundred forty-five million, five hundred forty-five thousand, six hundred eighty-six".