998582297472 has 640 divisors, whose sum is σ = 3135065472000. Its totient is φ = 315200471040.

The previous prime is 998582297407. The next prime is 998582297497. The reversal of 998582297472 is 274792285899.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 998582297472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2861267154 + ... + 2861267502.

It is an arithmetic number, because the mean of its divisors is an integer number (4898539800).

Almost surely, 2^998582297472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998582297472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567532736000).

998582297472 is an abundant number, since it is smaller than the sum of its proper divisors (2136483174528).

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

998582297472 is a wasteful number, since it uses less digits than its factorization.

998582297472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 575 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

The spelling of 998582297472 in words is "nine hundred ninety-eight billion, five hundred eighty-two million, two hundred ninety-seven thousand, four hundred seventy-two".