20247503503 has 2 divisors, whose sum is σ = 20247503504. Its totient is φ = 20247503502.

The previous prime is 20247503491. The next prime is 20247503513. The reversal of 20247503503 is 30530574202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20247503503 - 2³³ = 11657568911 is a prime.

It is a super-2 number, since 2×20247503503² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20247503513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10123751751 + 10123751752.

It is an arithmetic number, because the mean of its divisors is an integer number (10123751752).

Almost surely, 2^20247503503 is an apocalyptic number.

20247503503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20247503503 is an equidigital number, since it uses as much as digits as its factorization.

20247503503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 31.

The spelling of 20247503503 in words is "twenty billion, two hundred forty-seven million, five hundred three thousand, five hundred three".