998445663340 has 24 divisors (see below), whose sum is σ = 2103892000560. Its totient is φ = 398015197248.

The previous prime is 998445663283. The next prime is 998445663359. The reversal of 998445663340 is 43366544899.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85185750 + ... + 85197469.

It is an arithmetic number, because the mean of its divisors is an integer number (87662166690).

Almost surely, 2^998445663340 is an apocalyptic number.

It is an amenable number.

998445663340 is an abundant number, since it is smaller than the sum of its proper divisors (1105446337220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998445663340 is a wasteful number, since it uses less digits than its factorization.

998445663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170383521 (or 170383519 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 61.

The spelling of 998445663340 in words is "nine hundred ninety-eight billion, four hundred forty-five million, six hundred sixty-three thousand, three hundred forty".