82273831661 has 12 divisors (see below), whose sum is σ = 98040596220. Its totient is φ = 68800415040.

The previous prime is 82273831637. The next prime is 82273831681. The reversal of 82273831661 is 16613837228.

It can be written as a sum of positive squares in 2 ways, for example, as 48466022500 + 33807809161 = 220150^2 + 183869^2 .

It is not a de Polignac number, because 82273831661 - 2¹⁸ = 82273569517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82273831621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20474306 + ... + 20478323.

It is an arithmetic number, because the mean of its divisors is an integer number (8170049685).

Almost surely, 2^82273831661 is an apocalyptic number.

It is an amenable number.

82273831661 is a deficient number, since it is larger than the sum of its proper divisors (15766764559).

82273831661 is a wasteful number, since it uses less digits than its factorization.

82273831661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40952684 (or 40952677 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 82273831661 in words is "eighty-two billion, two hundred seventy-three million, eight hundred thirty-one thousand, six hundred sixty-one".