111551100050115 has 24 divisors (see below), whose sum is σ = 210932989186608. Its totient is φ = 54085381842240.

The previous prime is 111551100049999. The next prime is 111551100050119. The reversal of 111551100050115 is 511050001155111.

111551100050115 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 51 + 100 + 0 + 501 + 1 + 5 = 666.

It is not a de Polignac number, because 111551100050115 - 2²⁰ = 111551099001539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111551100050119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112677878344 + ... + 112677879333.

It is an arithmetic number, because the mean of its divisors is an integer number (8788874549442).

Almost surely, 2^{111551100050115} is an apocalyptic number.

111551100050115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111551100050115 is a deficient number, since it is larger than the sum of its proper divisors (99381889136493).

111551100050115 is a wasteful number, since it uses less digits than its factorization.

111551100050115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225355757699 (or 225355757696 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 27.

The spelling of 111551100050115 in words is "one hundred eleven trillion, five hundred fifty-one billion, one hundred million, fifty thousand, one hundred fifteen".