20853010502503 has 4 divisors (see below), whose sum is σ = 20861463285880. Its totient is φ = 20844557719128.

The previous prime is 20853010502501. The next prime is 20853010502573. The reversal of 20853010502503 is 30520501035802.

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 20853010502503 - 2¹ = 20853010502501 is a prime.

It is a super-3 number, since 3×20853010502503³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20853010502501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226387988 + ... + 4226392921.

It is an arithmetic number, because the mean of its divisors is an integer number (5215365821470).

Almost surely, 2^{20853010502503} is an apocalyptic number.

20853010502503 is a deficient number, since it is larger than the sum of its proper divisors (8452783377).

20853010502503 is an equidigital number, since it uses as much as digits as its factorization.

20853010502503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8452783376.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 20853010502503 in words is "twenty trillion, eight hundred fifty-three billion, ten million, five hundred two thousand, five hundred three".