11571996208 has 80 divisors (see below), whose sum is σ = 24750424800. Its totient is φ = 5219665920.

The previous prime is 11571996199. The next prime is 11571996217. The reversal of 11571996208 is 80269917511.

11571996208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11571996199) and next prime (11571996217).

It is a super-2 number, since 2×11571996208² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 634578 + ... + 652558.

It is an arithmetic number, because the mean of its divisors is an integer number (309380310).

Almost surely, 2^11571996208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11571996208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12375212400).

11571996208 is an abundant number, since it is smaller than the sum of its proper divisors (13178428592).

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

11571996208 is a wasteful number, since it uses less digits than its factorization.

11571996208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110 (or 18104 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 11571996208 in words is "eleven billion, five hundred seventy-one million, nine hundred ninety-six thousand, two hundred eight".