2018191011111 has 96 divisors (see below), whose sum is σ = 3387888421632. Its totient is φ = 1146481620480.

The previous prime is 2018191011107. The next prime is 2018191011149. The reversal of 2018191011111 is 1111101918102.

It is not a de Polignac number, because 2018191011111 - 2² = 2018191011107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018191011191) 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, 11410396 + ... + 11585918.

It is an arithmetic number, because the mean of its divisors is an integer number (35290504392).

Almost surely, 2^{2018191011111} is an apocalyptic number.

2018191011111 is a deficient number, since it is larger than the sum of its proper divisors (1369697410521).

2018191011111 is a wasteful number, since it uses less digits than its factorization.

2018191011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175693 (or 175690 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 27.

Adding to 2018191011111 its reverse (1111101918102), we get a palindrome (3129292929213).

The spelling of 2018191011111 in words is "two trillion, eighteen billion, one hundred ninety-one million, eleven thousand, one hundred eleven".