18112817759 has 4 divisors (see below), whose sum is σ = 18151603704. Its totient is φ = 18074031816.

The previous prime is 18112817753. The next prime is 18112817761. The reversal of 18112817759 is 95771821181.

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 18112817759 - 2¹⁶ = 18112752223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18112817753) 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, 19392272 + ... + 19393205.

It is an arithmetic number, because the mean of its divisors is an integer number (4537900926).

Almost surely, 2^18112817759 is an apocalyptic number.

18112817759 is a deficient number, since it is larger than the sum of its proper divisors (38785945).

18112817759 is an equidigital number, since it uses as much as digits as its factorization.

18112817759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38785944.

The product of its digits is 282240, while the sum is 50.

The spelling of 18112817759 in words is "eighteen billion, one hundred twelve million, eight hundred seventeen thousand, seven hundred fifty-nine".