11513505023 has 2 divisors, whose sum is σ = 11513505024. Its totient is φ = 11513505022.

The previous prime is 11513504971. The next prime is 11513505037. The reversal of 11513505023 is 32050531511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11513505023 - 2¹⁸ = 11513242879 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11513504983 and 11513505001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11513505043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756752511 + 5756752512.

It is an arithmetic number, because the mean of its divisors is an integer number (5756752512).

Almost surely, 2^11513505023 is an apocalyptic number.

11513505023 is a deficient number, since it is larger than the sum of its proper divisors (1).

11513505023 is an equidigital number, since it uses as much as digits as its factorization.

11513505023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 11513505023 in words is "eleven billion, five hundred thirteen million, five hundred five thousand, twenty-three".