20473053511679 has 4 divisors (see below), whose sum is σ = 20473205064720. Its totient is φ = 20472901958640.

The previous prime is 20473053511637. The next prime is 20473053511699. The reversal of 20473053511679 is 97611535037402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20473053511679 - 2²⁸ = 20472785076223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20473053511679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473053511609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75573707 + ... + 75844124.

It is an arithmetic number, because the mean of its divisors is an integer number (5118301266180).

Almost surely, 2^{20473053511679} is an apocalyptic number.

20473053511679 is a deficient number, since it is larger than the sum of its proper divisors (151553041).

20473053511679 is a wasteful number, since it uses less digits than its factorization.

20473053511679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151553040.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 20473053511679 in words is "twenty trillion, four hundred seventy-three billion, fifty-three million, five hundred eleven thousand, six hundred seventy-nine".