998844318645 has 16 divisors (see below), whose sum is σ = 1602730147200. Its totient is φ = 531190557504.

The previous prime is 998844318629. The next prime is 998844318683. The reversal of 998844318645 is 546813448899.

It is not a de Polignac number, because 998844318645 - 2⁴ = 998844318629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998844318645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95395369 + ... + 95405838.

It is an arithmetic number, because the mean of its divisors is an integer number (100170634200).

Almost surely, 2^998844318645 is an apocalyptic number.

It is an amenable number.

998844318645 is a deficient number, since it is larger than the sum of its proper divisors (603885828555).

998844318645 is a wasteful number, since it uses less digits than its factorization.

998844318645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190801564.

The product of its digits is 238878720, while the sum is 69.

The spelling of 998844318645 in words is "nine hundred ninety-eight billion, eight hundred forty-four million, three hundred eighteen thousand, six hundred forty-five".