199498797149599 has 2 divisors, whose sum is σ = 199498797149600. Its totient is φ = 199498797149598.

The previous prime is 199498797149593. The next prime is 199498797149611. The reversal of 199498797149599 is 995941797894991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199498797149599 - 2¹⁹ = 199498796625311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199498797149593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99749398574799 + 99749398574800.

It is an arithmetic number, because the mean of its divisors is an integer number (99749398574800).

Almost surely, 2^{199498797149599} is an apocalyptic number.

199498797149599 is a deficient number, since it is larger than the sum of its proper divisors (1).

199498797149599 is an equidigital number, since it uses as much as digits as its factorization.

199498797149599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 149993907840, while the sum is 100.

The spelling of 199498797149599 in words is "one hundred ninety-nine trillion, four hundred ninety-eight billion, seven hundred ninety-seven million, one hundred forty-nine thousand, five hundred ninety-nine".