11187544018 has 16 divisors (see below), whose sum is σ = 19180174464. Its totient is φ = 4794279840.

The previous prime is 11187544013. The next prime is 11187544051. The reversal of 11187544018 is 81044578111.

It is a super-2 number, since 2×11187544018² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11187544013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 217678 + ... + 264118.

It is an arithmetic number, because the mean of its divisors is an integer number (1198760904).

Almost surely, 2^11187544018 is an apocalyptic number.

11187544018 is a deficient number, since it is larger than the sum of its proper divisors (7992630446).

11187544018 is a wasteful number, since it uses less digits than its factorization.

11187544018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63657.

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 11187544018 in words is "eleven billion, one hundred eighty-seven million, five hundred forty-four thousand, eighteen".