20532002503 has 4 divisors (see below), whose sum is σ = 21424698288. Its totient is φ = 19639306720.

The previous prime is 20532002479. The next prime is 20532002539. The reversal of 20532002503 is 30520023502.

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 20532002503 - 2²¹ = 20529905351 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 (20532002563) 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, 446347858 + ... + 446347903.

It is an arithmetic number, because the mean of its divisors is an integer number (5356174572).

Almost surely, 2^20532002503 is an apocalyptic number.

20532002503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20532002503 is a deficient number, since it is larger than the sum of its proper divisors (892695785).

20532002503 is an equidigital number, since it uses as much as digits as its factorization.

20532002503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892695784.

The product of its (nonzero) digits is 1800, while the sum is 22.

The spelling of 20532002503 in words is "twenty billion, five hundred thirty-two million, two thousand, five hundred three".