20533113503 has 8 divisors (see below), whose sum is σ = 23541872640. Its totient is φ = 17543218680.

The previous prime is 20533113467. The next prime is 20533113509. The reversal of 20533113503 is 30531133502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20533113503 - 2¹⁸ = 20532851359 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 (20533113509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4713743 + ... + 4718096.

It is an arithmetic number, because the mean of its divisors is an integer number (2942734080).

Almost surely, 2^20533113503 is an apocalyptic number.

20533113503 is a deficient number, since it is larger than the sum of its proper divisors (3008759137).

20533113503 is an equidigital number, since it uses as much as digits as its factorization.

20533113503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432157.

The product of its (nonzero) digits is 4050, while the sum is 26.

The spelling of 20533113503 in words is "twenty billion, five hundred thirty-three million, one hundred thirteen thousand, five hundred three".