18204000365664 has 72 divisors (see below), whose sum is σ = 54018392409072. Its totient is φ = 5804174027520.

The previous prime is 18204000365653. The next prime is 18204000365669. The reversal of 18204000365664 is 46656300040281.

18204000365664 is a `hidden beast` number, since 1 + 82 + 0 + 4 + 0 + 0 + 0 + 3 + 6 + 566 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18204000365669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1374087607 + ... + 1374100854.

It is an arithmetic number, because the mean of its divisors is an integer number (750255450126).

Almost surely, 2^{18204000365664} is an apocalyptic number.

It is an amenable number.

18204000365664 is an abundant number, since it is smaller than the sum of its proper divisors (35814392043408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18204000365664 is a wasteful number, since it uses less digits than its factorization.

18204000365664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748188500 (or 2748188489 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 18204000365664 in words is "eighteen trillion, two hundred four billion, three hundred sixty-five thousand, six hundred sixty-four".