188385904100111 has 4 divisors (see below), whose sum is σ = 188385994045032. Its totient is φ = 188385814155192.

The previous prime is 188385904100101. The next prime is 188385904100129. The reversal of 188385904100111 is 111001409583881.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188385904100111 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 188385904100111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188385904100101) 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, 41753996 + ... + 46045281.

It is an arithmetic number, because the mean of its divisors is an integer number (47096498511258).

Almost surely, 2^{188385904100111} is an apocalyptic number.

188385904100111 is a deficient number, since it is larger than the sum of its proper divisors (89944921).

188385904100111 is an equidigital number, since it uses as much as digits as its factorization.

188385904100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89944920.

The product of its (nonzero) digits is 276480, while the sum is 50.

The spelling of 188385904100111 in words is "one hundred eighty-eight trillion, three hundred eighty-five billion, nine hundred four million, one hundred thousand, one hundred eleven".