199288135816853 has 2 divisors, whose sum is σ = 199288135816854. Its totient is φ = 199288135816852.

The previous prime is 199288135816771. The next prime is 199288135816909. The reversal of 199288135816853 is 358618531882991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131848678921444 + 67439456895409 = 11482538^2 + 8212153^2 .

It is a cyclic number.

It is not a de Polignac number, because 199288135816853 - 2¹⁰ = 199288135815829 is a prime.

It is a super-2 number, since 2×199288135816853² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199288135810853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99644067908426 + 99644067908427.

It is an arithmetic number, because the mean of its divisors is an integer number (99644067908427).

Almost surely, 2^{199288135816853} is an apocalyptic number.

It is an amenable number.

199288135816853 is a deficient number, since it is larger than the sum of its proper divisors (1).

199288135816853 is an equidigital number, since it uses as much as digits as its factorization.

199288135816853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 895795200, while the sum is 77.

The spelling of 199288135816853 in words is "one hundred ninety-nine trillion, two hundred eighty-eight billion, one hundred thirty-five million, eight hundred sixteen thousand, eight hundred fifty-three".