18028968805 has 16 divisors (see below), whose sum is σ = 23061715200. Its totient is φ = 13491092160.

The previous prime is 18028968803. The next prime is 18028968817. The reversal of 18028968805 is 50886982081.

It is not a de Polignac number, because 18028968805 - 2¹ = 18028968803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18028968803) 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 15 ways as a sum of consecutive naturals, for example, 1193626 + ... + 1208635.

It is an arithmetic number, because the mean of its divisors is an integer number (1441357200).

Almost surely, 2^18028968805 is an apocalyptic number.

It is an amenable number.

18028968805 is a deficient number, since it is larger than the sum of its proper divisors (5032746395).

18028968805 is a wasteful number, since it uses less digits than its factorization.

18028968805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402364.

The product of its (nonzero) digits is 2211840, while the sum is 55.

The spelling of 18028968805 in words is "eighteen billion, twenty-eight million, nine hundred sixty-eight thousand, eight hundred five".