199936123194338 has 8 divisors (see below), whose sum is σ = 307218921006060. Its totient is φ = 97529816192320.

The previous prime is 199936123194337. The next prime is 199936123194463. The reversal of 199936123194338 is 833491321639991.

It can be written as a sum of positive squares in 2 ways, for example, as 198995966067649 + 940157126689 = 14106593^2 + 969617^2 .

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

It is not an unprimeable number, because it can be changed into a prime (199936123194337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219122702323 + ... + 1219122702486.

Almost surely, 2^{199936123194338} is an apocalyptic number.

199936123194338 is a deficient number, since it is larger than the sum of its proper divisors (107282797811722).

199936123194338 is a wasteful number, since it uses less digits than its factorization.

199936123194338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438245404852.

The product of its digits is 204073344, while the sum is 71.

The spelling of 199936123194338 in words is "one hundred ninety-nine trillion, nine hundred thirty-six billion, one hundred twenty-three million, one hundred ninety-four thousand, three hundred thirty-eight".