11533504423 has 16 divisors (see below), whose sum is σ = 13650037056. Its totient is φ = 9540311040.

The previous prime is 11533504397. The next prime is 11533504459. The reversal of 11533504423 is 32440533511.

It is a cyclic number.

It is not a de Polignac number, because 11533504423 - 2⁵ = 11533504391 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 (11533504483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232186 + ... + 277447.

It is an arithmetic number, because the mean of its divisors is an integer number (853127316).

Almost surely, 2^11533504423 is an apocalyptic number.

11533504423 is a deficient number, since it is larger than the sum of its proper divisors (2116532633).

11533504423 is an equidigital number, since it uses as much as digits as its factorization.

11533504423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509754.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 11533504423 in words is "eleven billion, five hundred thirty-three million, five hundred four thousand, four hundred twenty-three".