11816979216 has 160 divisors (see below), whose sum is σ = 35918201088. Its totient is φ = 3277946880.

The previous prime is 11816979211. The next prime is 11816979233. The reversal of 11816979216 is 61297961811.

It is not an unprimeable number, because it can be changed into a prime (11816979211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1723956 + ... + 1730796.

Almost surely, 2^11816979216 is an apocalyptic number.

11816979216 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 11816979216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17959100544).

11816979216 is an abundant number, since it is smaller than the sum of its proper divisors (24101221872).

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

11816979216 is a wasteful number, since it uses less digits than its factorization.

11816979216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009 (or 7003 counting only the distinct ones).

The product of its digits is 326592, while the sum is 51.

The spelling of 11816979216 in words is "eleven billion, eight hundred sixteen million, nine hundred seventy-nine thousand, two hundred sixteen".