18004445776 has 20 divisors (see below), whose sum is σ = 34989012544. Its totient is φ = 8975023200.

The previous prime is 18004445773. The next prime is 18004445801. The reversal of 18004445776 is 67754440081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004445773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694520 + ... + 1705111.

Almost surely, 2^18004445776 is an apocalyptic number.

18004445776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18004445776 is a deficient number, since it is larger than the sum of its proper divisors (16984566768).

18004445776 is a wasteful number, since it uses less digits than its factorization.

18004445776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399970 (or 3399964 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 18004445776 in words is "eighteen billion, four million, four hundred forty-five thousand, seven hundred seventy-six".