199199558377 has 16 divisors (see below), whose sum is σ = 222343392960. Its totient is φ = 177354220032.

The previous prime is 199199558351. The next prime is 199199558399. The reversal of 199199558377 is 773855991991.

It is a cyclic number.

It is not a de Polignac number, because 199199558377 - 2³⁵ = 164839820009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199199558347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230868 + ... + 672085.

It is an arithmetic number, because the mean of its divisors is an integer number (13896462060).

Almost surely, 2^199199558377 is an apocalyptic number.

199199558377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

199199558377 is a deficient number, since it is larger than the sum of its proper divisors (23143834583).

199199558377 is a wasteful number, since it uses less digits than its factorization.

199199558377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903672.

The product of its digits is 192893400, while the sum is 73.

The spelling of 199199558377 in words is "one hundred ninety-nine billion, one hundred ninety-nine million, five hundred fifty-eight thousand, three hundred seventy-seven".