11919979104 has 108 divisors (see below), whose sum is σ = 34427065428. Its totient is φ = 3608549120.

The previous prime is 11919979091. The next prime is 11919979111. The reversal of 11919979104 is 40197991911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11766502 + ... + 11767514.

Almost surely, 2^11919979104 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 11919979104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17213532714).

11919979104 is an abundant number, since it is smaller than the sum of its proper divisors (22507086324).

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

11919979104 is an equidigital number, since it uses as much as digits as its factorization.

11919979104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 51.

The spelling of 11919979104 in words is "eleven billion, nine hundred nineteen million, nine hundred seventy-nine thousand, one hundred four".