18388573045025 has 6 divisors (see below), whose sum is σ = 22801830575862. Its totient is φ = 14710858436000.

The previous prime is 18388573045019. The next prime is 18388573045091. The reversal of 18388573045025 is 52054037588381.

It can be written as a sum of positive squares in 3 ways, for example, as 6322453773601 + 12066119271424 = 2514449^2 + 3473632^2 .

It is not a de Polignac number, because 18388573045025 - 2²⁰ = 18388571996449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367771460876 + ... + 367771460925.

It is an arithmetic number, because the mean of its divisors is an integer number (3800305095977).

Almost surely, 2^{18388573045025} is an apocalyptic number.

It is an amenable number.

18388573045025 is a deficient number, since it is larger than the sum of its proper divisors (4413257530837).

18388573045025 is an equidigital number, since it uses as much as digits as its factorization.

18388573045025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735542921811 (or 735542921806 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 18388573045025 in words is "eighteen trillion, three hundred eighty-eight billion, five hundred seventy-three million, forty-five thousand, twenty-five".