82185183361 has 4 divisors (see below), whose sum is σ = 83735847252. Its totient is φ = 80634519472.

The previous prime is 82185183359. The next prime is 82185183391. The reversal of 82185183361 is 16338158128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53954462961 + 28230720400 = 232281^2 + 168020^2 .

It is a cyclic number.

It is not a de Polignac number, because 82185183361 - 2¹ = 82185183359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82185183391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775331866 + ... + 775331971.

It is an arithmetic number, because the mean of its divisors is an integer number (20933961813).

Almost surely, 2^82185183361 is an apocalyptic number.

It is an amenable number.

82185183361 is a deficient number, since it is larger than the sum of its proper divisors (1550663891).

82185183361 is a wasteful number, since it uses less digits than its factorization.

82185183361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550663890.

The product of its digits is 276480, while the sum is 46.

The spelling of 82185183361 in words is "eighty-two billion, one hundred eighty-five million, one hundred eighty-three thousand, three hundred sixty-one".