11087988912 has 1080 divisors, whose sum is σ = 45509410128. Its totient is φ = 2586608640.

The previous prime is 11087988893. The next prime is 11087988913. The reversal of 11087988912 is 21988978011.

It is a super-2 number, since 2×11087988912² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11087988913) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 299675358 + ... + 299675394.

Almost surely, 2^11087988912 is an apocalyptic number.

11087988912 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 11087988912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22754705064).

11087988912 is an abundant number, since it is smaller than the sum of its proper divisors (34421421216).

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

11087988912 is a wasteful number, since it uses less digits than its factorization.

11087988912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 54.

It can be divided in two parts, 11087988 and 912, that added together give a square (11088900 = 3330²).

The spelling of 11087988912 in words is "eleven billion, eighty-seven million, nine hundred eighty-eight thousand, nine hundred twelve".