198321999706 has 16 divisors (see below), whose sum is σ = 304666977384. Its totient is φ = 96794348544.

The previous prime is 198321999653. The next prime is 198321999709. The reversal of 198321999706 is 607999123891.

It can be written as a sum of positive squares in 4 ways, for example, as 125858205225 + 72463794481 = 354765^2 + 269191^2 .

It is not an unprimeable number, because it can be changed into a prime (198321999709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6987745 + ... + 7016068.

Almost surely, 2^198321999706 is an apocalyptic number.

198321999706 is a deficient number, since it is larger than the sum of its proper divisors (106344977678).

198321999706 is a wasteful number, since it uses less digits than its factorization.

198321999706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14003985.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 198321999706 in words is "one hundred ninety-eight billion, three hundred twenty-one million, nine hundred ninety-nine thousand, seven hundred six".