198345451776 has 144 divisors (see below), whose sum is σ = 558107659200. Its totient is φ = 62360838144.

The previous prime is 198345451751. The next prime is 198345451781. The reversal of 198345451776 is 677154543891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3311890 + ... + 3371246.

Almost surely, 2^198345451776 is an apocalyptic number.

198345451776 is a gapful number since it is divisible by the number (16) 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 198345451776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279053829600).

198345451776 is an abundant number, since it is smaller than the sum of its proper divisors (359762207424).

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

198345451776 is a wasteful number, since it uses less digits than its factorization.

198345451776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59624 (or 59610 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The spelling of 198345451776 in words is "one hundred ninety-eight billion, three hundred forty-five million, four hundred fifty-one thousand, seven hundred seventy-six".