11125555155 has 96 divisors (see below), whose sum is σ = 23083849152. Its totient is φ = 4885171200.

The previous prime is 11125555151. The next prime is 11125555183. The reversal of 11125555155 is 55155552111.

11125555155 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 55 + 551 + 55 = 666.

It is not a de Polignac number, because 11125555155 - 2² = 11125555151 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11125555151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 324745 + ... + 357365.

It is an arithmetic number, because the mean of its divisors is an integer number (240456762).

Almost surely, 2^11125555155 is an apocalyptic number.

11125555155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11125555155 is an abundant number, since it is smaller than the sum of its proper divisors (11958293997).

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

11125555155 is a wasteful number, since it uses less digits than its factorization.

11125555155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32709 (or 32706 counting only the distinct ones).

The product of its digits is 31250, while the sum is 36.

The spelling of 11125555155 in words is "eleven billion, one hundred twenty-five million, five hundred fifty-five thousand, one hundred fifty-five".