199161417101942 has 32 divisors (see below), whose sum is σ = 302466031005600. Its totient is φ = 98345604031488.

The previous prime is 199161417101923. The next prime is 199161417101989. The reversal of 199161417101942 is 249101714161991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180059684 + ... + 181162392.

It is an arithmetic number, because the mean of its divisors is an integer number (9452063468925).

Almost surely, 2^{199161417101942} is an apocalyptic number.

199161417101942 is a deficient number, since it is larger than the sum of its proper divisors (103304613903658).

199161417101942 is a wasteful number, since it uses less digits than its factorization.

199161417101942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105520.

The product of its (nonzero) digits is 979776, while the sum is 56.

The spelling of 199161417101942 in words is "one hundred ninety-nine trillion, one hundred sixty-one billion, four hundred seventeen million, one hundred one thousand, nine hundred forty-two".