18025037681399 has 16 divisors (see below), whose sum is σ = 20704579584000. Its totient is φ = 15371637551424.

The previous prime is 18025037681393. The next prime is 18025037681447. The reversal of 18025037681399 is 99318673052081.

It is a de Polignac number, because none of the positive numbers 2^k-18025037681399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025037681393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28968842 + ... + 29584520.

It is an arithmetic number, because the mean of its divisors is an integer number (1294036224000).

Almost surely, 2^{18025037681399} is an apocalyptic number.

18025037681399 is a deficient number, since it is larger than the sum of its proper divisors (2679541902601).

18025037681399 is a wasteful number, since it uses less digits than its factorization.

18025037681399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636902.

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 18025037681399 in words is "eighteen trillion, twenty-five billion, thirty-seven million, six hundred eighty-one thousand, three hundred ninety-nine".