11556232275 has 72 divisors (see below), whose sum is σ = 22368382320. Its totient is φ = 5248938240.

The previous prime is 11556232271. The next prime is 11556232277. The reversal of 11556232275 is 57223265511.

It is not a de Polignac number, because 11556232275 - 2² = 11556232271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556232271) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 566961 + ... + 586989.

Almost surely, 2^11556232275 is an apocalyptic number.

11556232275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11556232275 is a deficient number, since it is larger than the sum of its proper divisors (10812150045).

11556232275 is a wasteful number, since it uses less digits than its factorization.

11556232275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20213 (or 20201 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

Adding to 11556232275 its reverse (57223265511), we get a palindrome (68779497786).

The spelling of 11556232275 in words is "eleven billion, five hundred fifty-six million, two hundred thirty-two thousand, two hundred seventy-five".