11571996256 has 96 divisors (see below), whose sum is σ = 24788332800. Its totient is φ = 5302961664.

The previous prime is 11571996229. The next prime is 11571996257. The reversal of 11571996256 is 65269917511.

11571996256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11571996256² (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 (11571996257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1673895 + ... + 1680793.

It is an arithmetic number, because the mean of its divisors is an integer number (258211800).

Almost surely, 2^11571996256 is an apocalyptic number.

11571996256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11571996256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12394166400).

11571996256 is an abundant number, since it is smaller than the sum of its proper divisors (13216336544).

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

11571996256 is a wasteful number, since it uses less digits than its factorization.

11571996256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028 (or 7020 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 52.

The spelling of 11571996256 in words is "eleven billion, five hundred seventy-one million, nine hundred ninety-six thousand, two hundred fifty-six".