11520123535 has 4 divisors (see below), whose sum is σ = 13824148248. Its totient is φ = 9216098824.

The previous prime is 11520123523. The next prime is 11520123547. The reversal of 11520123535 is 53532102511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53532102511 = 61 ⋅877575451.

It is an interprime number because it is at equal distance from previous prime (11520123523) and next prime (11520123547).

It is a cyclic number.

It is not a de Polignac number, because 11520123535 - 2⁹ = 11520123023 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 3 ways as a sum of consecutive naturals, for example, 1152012349 + ... + 1152012358.

It is an arithmetic number, because the mean of its divisors is an integer number (3456037062).

Almost surely, 2^11520123535 is an apocalyptic number.

11520123535 is a deficient number, since it is larger than the sum of its proper divisors (2304024713).

11520123535 is an equidigital number, since it uses as much as digits as its factorization.

11520123535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304024712.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 11520123535 in words is "eleven billion, five hundred twenty million, one hundred twenty-three thousand, five hundred thirty-five".