198961136699 has 8 divisors (see below), whose sum is σ = 214280206560. Its totient is φ = 183644119296.

The previous prime is 198961136639. The next prime is 198961136711. The reversal of 198961136699 is 996631169891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198961136699 - 2¹⁶ = 198961071163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198961136639) 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, 308759 + ... + 702320.

It is an arithmetic number, because the mean of its divisors is an integer number (26785025820).

Almost surely, 2^198961136699 is an apocalyptic number.

198961136699 is a deficient number, since it is larger than the sum of its proper divisors (15319069861).

198961136699 is a wasteful number, since it uses less digits than its factorization.

198961136699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026229.

The product of its digits is 34012224, while the sum is 68.

The spelling of 198961136699 in words is "one hundred ninety-eight billion, nine hundred sixty-one million, one hundred thirty-six thousand, six hundred ninety-nine".