18286684343687 has 4 divisors (see below), whose sum is σ = 18302968124280. Its totient is φ = 18270400563096.

The previous prime is 18286684343591. The next prime is 18286684343779. The reversal of 18286684343687 is 78634348668281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18286684343687 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 (18286684342687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8141888612 + ... + 8141890857.

It is an arithmetic number, because the mean of its divisors is an integer number (4575742031070).

Almost surely, 2^{18286684343687} is an apocalyptic number.

18286684343687 is a deficient number, since it is larger than the sum of its proper divisors (16283780593).

18286684343687 is a wasteful number, since it uses less digits than its factorization.

18286684343687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16283780592.

The product of its digits is 1783627776, while the sum is 74.

The spelling of 18286684343687 in words is "eighteen trillion, two hundred eighty-six billion, six hundred eighty-four million, three hundred forty-three thousand, six hundred eighty-seven".