18245858215199 has 8 divisors (see below), whose sum is σ = 18256876906560. Its totient is φ = 18234842854176.

The previous prime is 18245858215153. The next prime is 18245858215201. The reversal of 18245858215199 is 99151285854281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18245858215199 - 2¹² = 18245858211103 is a prime.

It is a super-2 number, since 2×18245858215199² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245858215099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10171937 + ... + 11830469.

It is an arithmetic number, because the mean of its divisors is an integer number (2282109613320).

Almost surely, 2^{18245858215199} is an apocalyptic number.

18245858215199 is a deficient number, since it is larger than the sum of its proper divisors (11018691361).

18245858215199 is a wasteful number, since it uses less digits than its factorization.

18245858215199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665169.

The product of its digits is 82944000, while the sum is 68.

The spelling of 18245858215199 in words is "eighteen trillion, two hundred forty-five billion, eight hundred fifty-eight million, two hundred fifteen thousand, one hundred ninety-nine".