18208849287745 has 8 divisors (see below), whose sum is σ = 21850834106880. Its totient is φ = 14566936122480.

The previous prime is 18208849287731. The next prime is 18208849287767. The reversal of 18208849287745 is 54778294880281.

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

It is not a de Polignac number, because 18208849287745 - 2⁴³ = 9412756265537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17352801 + ... + 18372190.

It is an arithmetic number, because the mean of its divisors is an integer number (2731354263360).

Almost surely, 2^{18208849287745} is an apocalyptic number.

It is an amenable number.

18208849287745 is a deficient number, since it is larger than the sum of its proper divisors (3641984819135).

18208849287745 is a wasteful number, since it uses less digits than its factorization.

18208849287745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35826935.

The product of its (nonzero) digits is 578027520, while the sum is 73.

The spelling of 18208849287745 in words is "eighteen trillion, two hundred eight billion, eight hundred forty-nine million, two hundred eighty-seven thousand, seven hundred forty-five".