111550055523 has 4 divisors (see below), whose sum is σ = 148733407368. Its totient is φ = 74366703680.

The previous prime is 111550055521. The next prime is 111550055527. The reversal of 111550055523 is 325550055111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111550055523 - 2¹ = 111550055521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111550055521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18591675918 + ... + 18591675923.

It is an arithmetic number, because the mean of its divisors is an integer number (37183351842).

Almost surely, 2^111550055523 is an apocalyptic number.

111550055523 is a deficient number, since it is larger than the sum of its proper divisors (37183351845).

111550055523 is an equidigital number, since it uses as much as digits as its factorization.

111550055523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37183351844.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 111550055523 in words is "one hundred eleven billion, five hundred fifty million, fifty-five thousand, five hundred twenty-three".