198770081064 has 64 divisors (see below), whose sum is σ = 506436416640. Its totient is φ = 64989200640.

The previous prime is 198770081039. The next prime is 198770081071. The reversal of 198770081064 is 460180077891.

It is a junction number, because it is equal to n+sod(n) for n = 198770080998 and 198770081016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5268909 + ... + 5306499.

It is an arithmetic number, because the mean of its divisors is an integer number (7913069010).

Almost surely, 2^198770081064 is an apocalyptic number.

It is an amenable number.

198770081064 is an abundant number, since it is smaller than the sum of its proper divisors (307666335576).

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

198770081064 is a wasteful number, since it uses less digits than its factorization.

198770081064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41810 (or 41806 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 198770081064 in words is "one hundred ninety-eight billion, seven hundred seventy million, eighty-one thousand, sixty-four".