199936123194337 has 2 divisors, whose sum is σ = 199936123194338. Its totient is φ = 199936123194336.

The previous prime is 199936123194307. The next prime is 199936123194463. The reversal of 199936123194337 is 733491321639991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199826241552081 + 109881642256 = 14135991^2 + 331484^2 .

It is an emirp because it is prime and its reverse (733491321639991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199936123194337 - 2⁷ = 199936123194209 is a prime.

It is a super-2 number, since 2×199936123194337² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199936123194307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99968061597168 + 99968061597169.

It is an arithmetic number, because the mean of its divisors is an integer number (99968061597169).

Almost surely, 2^{199936123194337} is an apocalyptic number.

It is an amenable number.

199936123194337 is a deficient number, since it is larger than the sum of its proper divisors (1).

199936123194337 is an equidigital number, since it uses as much as digits as its factorization.

199936123194337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 178564176, while the sum is 70.

The spelling of 199936123194337 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-seven".