199161417101943 has 16 divisors (see below), whose sum is σ = 268129796330240. Its totient is φ = 131483687768064.

The previous prime is 199161417101923. The next prime is 199161417101989. The reversal of 199161417101943 is 349101714161991.

199161417101943 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199161417101943 - 2⁶ = 199161417101879 is a prime.

It is a super-2 number, since 2×199161417101943² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199161417101923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23373048 + ... + 30734706.

It is an arithmetic number, because the mean of its divisors is an integer number (16758112270640).

Almost surely, 2^{199161417101943} is an apocalyptic number.

199161417101943 is a deficient number, since it is larger than the sum of its proper divisors (68968379228297).

199161417101943 is a wasteful number, since it uses less digits than its factorization.

199161417101943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449318.

The product of its (nonzero) digits is 1469664, while the sum is 57.

The spelling of 199161417101943 in words is "one hundred ninety-nine trillion, one hundred sixty-one billion, four hundred seventeen million, one hundred one thousand, nine hundred forty-three".