18136833755 has 4 divisors (see below), whose sum is σ = 21764200512. Its totient is φ = 14509467000.

The previous prime is 18136833751. The next prime is 18136833823. The reversal of 18136833755 is 55733863181.

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

It is not a de Polignac number, because 18136833755 - 2² = 18136833751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18136833751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813683371 + ... + 1813683380.

It is an arithmetic number, because the mean of its divisors is an integer number (5441050128).

Almost surely, 2^18136833755 is an apocalyptic number.

18136833755 is a deficient number, since it is larger than the sum of its proper divisors (3627366757).

18136833755 is an equidigital number, since it uses as much as digits as its factorization.

18136833755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627366756.

The product of its digits is 1814400, while the sum is 50.

The spelling of 18136833755 in words is "eighteen billion, one hundred thirty-six million, eight hundred thirty-three thousand, seven hundred fifty-five".