111611010155 has 16 divisors (see below), whose sum is σ = 134152671744. Its totient is φ = 89142611040.

The previous prime is 111611010107. The next prime is 111611010157. The reversal of 111611010155 is 551010116111.

It is not a de Polignac number, because 111611010155 - 2¹⁶ = 111610944619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111611010155.

It is not an unprimeable number, because it can be changed into a prime (111611010157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10798340 + ... + 10808670.

It is an arithmetic number, because the mean of its divisors is an integer number (8384541984).

Almost surely, 2^111611010155 is an apocalyptic number.

111611010155 is a deficient number, since it is larger than the sum of its proper divisors (22541661589).

111611010155 is a wasteful number, since it uses less digits than its factorization.

111611010155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13666.

The product of its (nonzero) digits is 150, while the sum is 23.

Adding to 111611010155 its reverse (551010116111), we get a palindrome (662621126266).

The spelling of 111611010155 in words is "one hundred eleven billion, six hundred eleven million, ten thousand, one hundred fifty-five".