11543523215 has 32 divisors (see below), whose sum is σ = 16063664256. Its totient is φ = 7799500800.

The previous prime is 11543523191. The next prime is 11543523239. The reversal of 11543523215 is 51232534511.

It is an interprime number because it is at equal distance from previous prime (11543523191) and next prime (11543523239).

It is not a de Polignac number, because 11543523215 - 2¹⁰ = 11543522191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4119815 + ... + 4122615.

It is an arithmetic number, because the mean of its divisors is an integer number (501989508).

Almost surely, 2^11543523215 is an apocalyptic number.

11543523215 is a deficient number, since it is larger than the sum of its proper divisors (4520141041).

11543523215 is a wasteful number, since it uses less digits than its factorization.

11543523215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499.

The product of its digits is 18000, while the sum is 32.

The spelling of 11543523215 in words is "eleven billion, five hundred forty-three million, five hundred twenty-three thousand, two hundred fifteen".