11581120110 has 48 divisors (see below), whose sum is σ = 32332600656. Its totient is φ = 2647112832.

The previous prime is 11581120099. The next prime is 11581120123. The reversal of 11581120110 is 1102118511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3937687 + ... + 3940626.

It is an arithmetic number, because the mean of its divisors is an integer number (673595847).

Almost surely, 2^11581120110 is an apocalyptic number.

11581120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11581120110 is an abundant number, since it is smaller than the sum of its proper divisors (20751480546).

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

11581120110 is a wasteful number, since it uses less digits than its factorization.

11581120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878337 (or 7878330 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 21.

Adding to 11581120110 its reverse (1102118511), we get a palindrome (12683238621).

The spelling of 11581120110 in words is "eleven billion, five hundred eighty-one million, one hundred twenty thousand, one hundred ten".