11123506992 has 90 divisors (see below), whose sum is σ = 31142795796. Its totient is φ = 3419694720.

The previous prime is 11123506981. The next prime is 11123507051. The reversal of 11123506992 is 29960532111.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 11123506992.

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, 9498567 + ... + 9499737.

Almost surely, 2^11123506992 is an apocalyptic number.

11123506992 is a gapful number since it is divisible by the number (12) 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 11123506992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15571397898).

11123506992 is an abundant number, since it is smaller than the sum of its proper divisors (20019288804).

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

11123506992 is an equidigital number, since it uses as much as digits as its factorization.

11123506992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 11123506992 in words is "eleven billion, one hundred twenty-three million, five hundred six thousand, nine hundred ninety-two".