80195171966 has 16 divisors (see below), whose sum is σ = 148052625504. Its totient is φ = 31725562464.

The previous prime is 80195171929. The next prime is 80195171981. The reversal of 80195171966 is 66917159108.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 220316225 + ... + 220316588.

It is an arithmetic number, because the mean of its divisors is an integer number (9253289094).

Almost surely, 2^80195171966 is an apocalyptic number.

80195171966 is a deficient number, since it is larger than the sum of its proper divisors (67857453538).

80195171966 is a wasteful number, since it uses less digits than its factorization.

80195171966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440632835.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 80195171966 in words is "eighty billion, one hundred ninety-five million, one hundred seventy-one thousand, nine hundred sixty-six".