198020776448 has 320 divisors, whose sum is σ = 468136323072. Its totient is φ = 82771476480.

The previous prime is 198020776427. The next prime is 198020776463. The reversal of 198020776448 is 844677020891.

It is a junction number, because it is equal to n+sod(n) for n = 198020776393 and 198020776402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406613261 + ... + 406613747.

Almost surely, 2^198020776448 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 198020776448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234068161536).

198020776448 is an abundant number, since it is smaller than the sum of its proper divisors (270115546624).

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

198020776448 is a wasteful number, since it uses less digits than its factorization.

198020776448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 198020776448 in words is "one hundred ninety-eight billion, twenty million, seven hundred seventy-six thousand, four hundred forty-eight".