11911536896 has 72 divisors (see below), whose sum is σ = 27230985600. Its totient is φ = 5094088704.

The previous prime is 11911536893. The next prime is 11911536899. The reversal of 11911536896 is 69863511911.

It is an interprime number because it is at equal distance from previous prime (11911536893) and next prime (11911536899).

It is a super-2 number, since 2×11911536896² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11911536893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865880 + ... + 879528.

Almost surely, 2^11911536896 is an apocalyptic number.

11911536896 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 11911536896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13615492800).

11911536896 is an abundant number, since it is smaller than the sum of its proper divisors (15319448704).

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

11911536896 is an equidigital number, since it uses as much as digits as its factorization.

11911536896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159 (or 14145 counting only the distinct ones).

The product of its digits is 349920, while the sum is 50.

The spelling of 11911536896 in words is "eleven billion, nine hundred eleven million, five hundred thirty-six thousand, eight hundred ninety-six".