998536535824 has 45 divisors (see below), whose sum is σ = 1950568552231. Its totient is φ = 495197250080.

The previous prime is 998536535813. The next prime is 998536535837. The reversal of 998536535824 is 428535635899.

The square root of 998536535824 is 999268.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998536535824.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 523615479 + ... + 523617385.

Almost surely, 2^998536535824 is an apocalyptic number.

998536535824 is the 999268-th square number.

It is an amenable number.

998536535824 is a deficient number, since it is larger than the sum of its proper divisors (952032016407).

998536535824 is an frugal number, since it uses more digits than its factorization.

998536535824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084 (or 2040 counting only the distinct ones).

The product of its digits is 279936000, while the sum is 67.

The spelling of 998536535824 in words is "nine hundred ninety-eight billion, five hundred thirty-six million, five hundred thirty-five thousand, eight hundred twenty-four".