1111555116156 has 96 divisors (see below), whose sum is σ = 2883293763840. Its totient is φ = 331672771584.

The previous prime is 1111555116151. The next prime is 1111555116227. The reversal of 1111555116156 is 6516115551111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111555116151) 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 31 ways as a sum of consecutive naturals, for example, 1005790 + ... + 1798533.

It is an arithmetic number, because the mean of its divisors is an integer number (30034310040).

Almost surely, 2^{1111555116156} is an apocalyptic number.

It is an amenable number.

1111555116156 is an abundant number, since it is smaller than the sum of its proper divisors (1771738647684).

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

1111555116156 is a wasteful number, since it uses less digits than its factorization.

1111555116156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804443 (or 2804441 counting only the distinct ones).

The product of its digits is 22500, while the sum is 39.

The spelling of 1111555116156 in words is "one trillion, one hundred eleven billion, five hundred fifty-five million, one hundred sixteen thousand, one hundred fifty-six".