198199958667 has 16 divisors (see below), whose sum is σ = 266004934272. Its totient is φ = 131266437120.

The previous prime is 198199958641. The next prime is 198199958689. The reversal of 198199958667 is 766859991891.

198199958667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198199958667 - 2¹⁵ = 198199925899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198199958592 and 198199958601.

It is not an unprimeable number, because it can be changed into a prime (198199958167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60043 + ... + 632459.

It is an arithmetic number, because the mean of its divisors is an integer number (16625308392).

Almost surely, 2^198199958667 is an apocalyptic number.

198199958667 is a deficient number, since it is larger than the sum of its proper divisors (67804975605).

198199958667 is a wasteful number, since it uses less digits than its factorization.

198199958667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573178.

The product of its digits is 529079040, while the sum is 78.

The spelling of 198199958667 in words is "one hundred ninety-eight billion, one hundred ninety-nine million, nine hundred fifty-eight thousand, six hundred sixty-seven".