20503131733 has 16 divisors (see below), whose sum is σ = 23544048384. Its totient is φ = 17490372480.

The previous prime is 20503131721. The next prime is 20503131749. The reversal of 20503131733 is 33713130502.

It is not a de Polignac number, because 20503131733 - 2²¹ = 20501034581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428553 + ... + 1442833.

It is an arithmetic number, because the mean of its divisors is an integer number (1471503024).

Almost surely, 2^20503131733 is an apocalyptic number.

It is an amenable number.

20503131733 is a deficient number, since it is larger than the sum of its proper divisors (3040916651).

20503131733 is a wasteful number, since it uses less digits than its factorization.

20503131733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15252.

The product of its (nonzero) digits is 5670, while the sum is 28.

The spelling of 20503131733 in words is "twenty billion, five hundred three million, one hundred thirty-one thousand, seven hundred thirty-three".