11111109999936 has 112 divisors (see below), whose sum is σ = 29898328824000. Its totient is φ = 3640696102912.

The previous prime is 11111109999881. The next prime is 11111109999937. The reversal of 11111109999936 is 63999990111111.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11111109999936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111109999937) 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, 344910166 + ... + 344942378.

It is an arithmetic number, because the mean of its divisors is an integer number (266949364500).

Almost surely, 2^{11111109999936} is an apocalyptic number.

11111109999936 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 11111109999936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14949164412000).

11111109999936 is an abundant number, since it is smaller than the sum of its proper divisors (18787218824064).

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

11111109999936 is a wasteful number, since it uses less digits than its factorization.

11111109999936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62736 (or 62726 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 60.

The spelling of 11111109999936 in words is "eleven trillion, one hundred eleven billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred thirty-six".