115111220055 has 64 divisors (see below), whose sum is σ = 200765900160. Its totient is φ = 55979827200.

The previous prime is 115111220033. The next prime is 115111220069. The reversal of 115111220055 is 550022111511.

It is not a de Polignac number, because 115111220055 - 2¹² = 115111215959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22923445 + ... + 22928465.

It is an arithmetic number, because the mean of its divisors is an integer number (3136967190).

Almost surely, 2^115111220055 is an apocalyptic number.

115111220055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115111220055 is a deficient number, since it is larger than the sum of its proper divisors (85654680105).

115111220055 is a wasteful number, since it uses less digits than its factorization.

115111220055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452.

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 115111220055 its reverse (550022111511), we get a palindrome (665133331566).

The spelling of 115111220055 in words is "one hundred fifteen billion, one hundred eleven million, two hundred twenty thousand, fifty-five".