1998441704448 has 528 divisors, whose sum is σ = 7075068698880. Its totient is φ = 551280328704.

The previous prime is 1998441704447. The next prime is 1998441704471. The reversal of 1998441704448 is 8444071448991.

1998441704448 is a `hidden beast` number, since 1 + 9 + 9 + 84 + 41 + 70 + 4 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1998441704447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50493115 + ... + 50532677.

Almost surely, 2^{1998441704448} is an apocalyptic number.

1998441704448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1998441704448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3537534349440).

1998441704448 is an abundant number, since it is smaller than the sum of its proper divisors (5076626994432).

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

1998441704448 is an equidigital number, since it uses as much as digits as its factorization.

1998441704448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39634 (or 39604 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 1998441704448 in words is "one trillion, nine hundred ninety-eight billion, four hundred forty-one million, seven hundred four thousand, four hundred forty-eight".