11915317696 has 112 divisors (see below), whose sum is σ = 26115264000. Its totient is φ = 5371591680.

The previous prime is 11915317691. The next prime is 11915317699. The reversal of 11915317696 is 69671351911.

It is a super-2 number, since 2×11915317696² (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 (11915317691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2501365 + ... + 2506123.

It is an arithmetic number, because the mean of its divisors is an integer number (233172000).

Almost surely, 2^11915317696 is an apocalyptic number.

11915317696 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 11915317696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13057632000).

11915317696 is an abundant number, since it is smaller than the sum of its proper divisors (14199946304).

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

11915317696 is a wasteful number, since it uses less digits than its factorization.

11915317696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890 (or 4880 counting only the distinct ones).

The product of its digits is 306180, while the sum is 49.

The spelling of 11915317696 in words is "eleven billion, nine hundred fifteen million, three hundred seventeen thousand, six hundred ninety-six".