11111180001156 has 24 divisors (see below), whose sum is σ = 28806762966240. Its totient is φ = 3703726667016.

The previous prime is 11111180001109. The next prime is 11111180001197. The reversal of 11111180001156 is 65110008111111.

It is a happy number.

It is a super-2 number, since 2×11111180001156² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51440648046 + ... + 51440648261.

It is an arithmetic number, because the mean of its divisors is an integer number (1200281790260).

Almost surely, 2^{11111180001156} is an apocalyptic number.

It is an amenable number.

11111180001156 is an abundant number, since it is smaller than the sum of its proper divisors (17695582965084).

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

11111180001156 is a wasteful number, since it uses less digits than its factorization.

11111180001156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102881296320 (or 102881296312 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 27.

Adding to 11111180001156 its reverse (65110008111111), we get a palindrome (76221188112267).

The spelling of 11111180001156 in words is "eleven trillion, one hundred eleven billion, one hundred eighty million, one thousand, one hundred fifty-six".