18111253745 has 32 divisors (see below), whose sum is σ = 24660260352. Its totient is φ = 12668654592.

The previous prime is 18111253733. The next prime is 18111253753. The reversal of 18111253745 is 54735211181.

It is a cyclic number.

It is not a de Polignac number, because 18111253745 - 2¹⁸ = 18110991601 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18111253699 and 18111253708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95177 + ... + 212793.

It is an arithmetic number, because the mean of its divisors is an integer number (770633136).

Almost surely, 2^18111253745 is an apocalyptic number.

It is an amenable number.

18111253745 is a deficient number, since it is larger than the sum of its proper divisors (6549006607).

18111253745 is a wasteful number, since it uses less digits than its factorization.

18111253745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117761.

The product of its digits is 33600, while the sum is 38.

The spelling of 18111253745 in words is "eighteen billion, one hundred eleven million, two hundred fifty-three thousand, seven hundred forty-five".