23565728503 has 2 divisors, whose sum is σ = 23565728504. Its totient is φ = 23565728502.

The previous prime is 23565728479. The next prime is 23565728507. The reversal of 23565728503 is 30582756532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23565728503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23565728507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11782864251 + 11782864252.

It is an arithmetic number, because the mean of its divisors is an integer number (11782864252).

Almost surely, 2^23565728503 is an apocalyptic number.

23565728503 is a deficient number, since it is larger than the sum of its proper divisors (1).

23565728503 is an equidigital number, since it uses as much as digits as its factorization.

23565728503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 23565728503 in words is "twenty-three billion, five hundred sixty-five million, seven hundred twenty-eight thousand, five hundred three".