11552656523 has 4 divisors (see below), whose sum is σ = 11555790168. Its totient is φ = 11549522880.

The previous prime is 11552656519. The next prime is 11552656567. The reversal of 11552656523 is 32565625511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32565625511 = 373 ⋅87307307.

It is a cyclic number.

It is not a de Polignac number, because 11552656523 - 2² = 11552656519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11552652523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561286 + ... + 1568667.

It is an arithmetic number, because the mean of its divisors is an integer number (2888947542).

Almost surely, 2^11552656523 is an apocalyptic number.

11552656523 is a deficient number, since it is larger than the sum of its proper divisors (3133645).

11552656523 is an equidigital number, since it uses as much as digits as its factorization.

11552656523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133644.

The product of its digits is 270000, while the sum is 41.

The spelling of 11552656523 in words is "eleven billion, five hundred fifty-two million, six hundred fifty-six thousand, five hundred twenty-three".