11556496536 has 64 divisors (see below), whose sum is σ = 31399183200. Its totient is φ = 3523212288.

The previous prime is 11556496531. The next prime is 11556496571. The reversal of 11556496536 is 63569465511.

It is a happy number.

It is a super-2 number, since 2×11556496536² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556496531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135901 + ... + 203916.

Almost surely, 2^11556496536 is an apocalyptic number.

It is an amenable number.

11556496536 is an abundant number, since it is smaller than the sum of its proper divisors (19842686664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11556496536 is a wasteful number, since it uses less digits than its factorization.

11556496536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339948 (or 339944 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 51.

The spelling of 11556496536 in words is "eleven billion, five hundred fifty-six million, four hundred ninety-six thousand, five hundred thirty-six".