18127901755 has 4 divisors (see below), whose sum is σ = 21753482112. Its totient is φ = 14502321400.

The previous prime is 18127901731. The next prime is 18127901783. The reversal of 18127901755 is 55710972181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55710972181 = 24029 ⋅2318489.

It is not a de Polignac number, because 18127901755 - 2¹¹ = 18127899707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812790171 + ... + 1812790180.

It is an arithmetic number, because the mean of its divisors is an integer number (5438370528).

Almost surely, 2^18127901755 is an apocalyptic number.

18127901755 is a deficient number, since it is larger than the sum of its proper divisors (3625580357).

18127901755 is an equidigital number, since it uses as much as digits as its factorization.

18127901755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625580356.

The product of its (nonzero) digits is 176400, while the sum is 46.

The spelling of 18127901755 in words is "eighteen billion, one hundred twenty-seven million, nine hundred one thousand, seven hundred fifty-five".