20502793503 has 12 divisors (see below), whose sum is σ = 30245256288. Its totient is φ = 13377708960.

The previous prime is 20502793471. The next prime is 20502793517. The reversal of 20502793503 is 30539720502.

It is not a de Polignac number, because 20502793503 - 2⁵ = 20502793471 is a prime.

It is a super-2 number, since 2×20502793503² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502793583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24234558 + ... + 24235403.

It is an arithmetic number, because the mean of its divisors is an integer number (2520438024).

Almost surely, 2^20502793503 is an apocalyptic number.

20502793503 is a deficient number, since it is larger than the sum of its proper divisors (9742462785).

20502793503 is a wasteful number, since it uses less digits than its factorization.

20502793503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48470014 (or 48470011 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The spelling of 20502793503 in words is "twenty billion, five hundred two million, seven hundred ninety-three thousand, five hundred three".