20412432503 has 4 divisors (see below), whose sum is σ = 20445516480. Its totient is φ = 20379348528.

The previous prime is 20412432427. The next prime is 20412432511. The reversal of 20412432503 is 30523421402.

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 20412432503 - 2⁸ = 20412432247 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 (20412462503) 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, 16541063 + ... + 16542296.

It is an arithmetic number, because the mean of its divisors is an integer number (5111379120).

Almost surely, 2^20412432503 is an apocalyptic number.

20412432503 is a deficient number, since it is larger than the sum of its proper divisors (33083977).

20412432503 is an equidigital number, since it uses as much as digits as its factorization.

20412432503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33083976.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20412432503 its reverse (30523421402), we get a palindrome (50935853905).

The spelling of 20412432503 in words is "twenty billion, four hundred twelve million, four hundred thirty-two thousand, five hundred three".