20533130503 has 2 divisors, whose sum is σ = 20533130504. Its totient is φ = 20533130502.

The previous prime is 20533130369. The next prime is 20533130543. The reversal of 20533130503 is 30503133502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20533130503 - 2³³ = 11943195911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20533130543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266565251 + 10266565252.

It is an arithmetic number, because the mean of its divisors is an integer number (10266565252).

Almost surely, 2^20533130503 is an apocalyptic number.

20533130503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533130503 is an equidigital number, since it uses as much as digits as its factorization.

20533130503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 25.

The spelling of 20533130503 in words is "twenty billion, five hundred thirty-three million, one hundred thirty thousand, five hundred three".