18028811065 has 8 divisors (see below), whose sum is σ = 21673003968. Its totient is φ = 14397428400.

The previous prime is 18028811033. The next prime is 18028811131. The reversal of 18028811065 is 56011882081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18028811065 - 2⁵ = 18028811033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3199461 + ... + 3205090.

It is an arithmetic number, because the mean of its divisors is an integer number (2709125496).

Almost surely, 2^18028811065 is an apocalyptic number.

It is an amenable number.

18028811065 is a deficient number, since it is larger than the sum of its proper divisors (3644192903).

18028811065 is an equidigital number, since it uses as much as digits as its factorization.

18028811065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405119.

The product of its (nonzero) digits is 30720, while the sum is 40.

The spelling of 18028811065 in words is "eighteen billion, twenty-eight million, eight hundred eleven thousand, sixty-five".