82191879706290 has 64 divisors (see below), whose sum is σ = 207760766247936. Its totient is φ = 20768951732672.

The previous prime is 82191879706241. The next prime is 82191879706309. The reversal of 82191879706290 is 9260797819128.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 556555452 + ... + 556703111.

It is an arithmetic number, because the mean of its divisors is an integer number (3246261972624).

Almost surely, 2^{82191879706290} is an apocalyptic number.

82191879706290 is an abundant number, since it is smaller than the sum of its proper divisors (125568886541646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82191879706290 is a wasteful number, since it uses less digits than its factorization.

82191879706290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113258703.

The product of its (nonzero) digits is 54867456, while the sum is 69.

The spelling of 82191879706290 in words is "eighty-two trillion, one hundred ninety-one billion, eight hundred seventy-nine million, seven hundred six thousand, two hundred ninety".