199193874323287 has 2 divisors, whose sum is σ = 199193874323288. Its totient is φ = 199193874323286.

The previous prime is 199193874323231. The next prime is 199193874323293. The reversal of 199193874323287 is 782323478391991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199193874323287 - 2⁷ = 199193874323159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199193874323207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99596937161643 + 99596937161644.

It is an arithmetic number, because the mean of its divisors is an integer number (99596937161644).

Almost surely, 2^{199193874323287} is an apocalyptic number.

199193874323287 is a deficient number, since it is larger than the sum of its proper divisors (1).

199193874323287 is an equidigital number, since it uses as much as digits as its factorization.

199193874323287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987614208, while the sum is 76.

The spelling of 199193874323287 in words is "one hundred ninety-nine trillion, one hundred ninety-three billion, eight hundred seventy-four million, three hundred twenty-three thousand, two hundred eighty-seven".