11556323236 has 12 divisors (see below), whose sum is σ = 20508405120. Its totient is φ = 5696778920.

The previous prime is 11556323167. The next prime is 11556323243. The reversal of 11556323236 is 63232365511.

It is a junction number, because it is equal to n+sod(n) for n = 11556323195 and 11556323204.

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, 20345356 + ... + 20345923.

It is an arithmetic number, because the mean of its divisors is an integer number (1709033760).

Almost surely, 2^11556323236 is an apocalyptic number.

It is an amenable number.

11556323236 is a deficient number, since it is larger than the sum of its proper divisors (8952081884).

11556323236 is a wasteful number, since it uses less digits than its factorization.

11556323236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40691354 (or 40691352 counting only the distinct ones).

The product of its digits is 97200, while the sum is 37.

Adding to 11556323236 its reverse (63232365511), we get a palindrome (74788688747).

The spelling of 11556323236 in words is "eleven billion, five hundred fifty-six million, three hundred twenty-three thousand, two hundred thirty-six".