91982173082 has 8 divisors (see below), whose sum is σ = 137974660896. Its totient is φ = 45990619452.

The previous prime is 91982173079. The next prime is 91982173159. The reversal of 91982173082 is 28037128919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91982173082.

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 3 ways as a sum of consecutive naturals, for example, 119123 + ... + 445145.

It is an arithmetic number, because the mean of its divisors is an integer number (17246832612).

Almost surely, 2^91982173082 is an apocalyptic number.

91982173082 is a deficient number, since it is larger than the sum of its proper divisors (45992487814).

91982173082 is a wasteful number, since it uses less digits than its factorization.

91982173082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467092.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 91982173082 in words is "ninety-one billion, nine hundred eighty-two million, one hundred seventy-three thousand, eighty-two".