82677238661 has 8 divisors (see below), whose sum is σ = 82882690200. Its totient is φ = 82471882752.

The previous prime is 82677238619. The next prime is 82677238667. The reversal of 82677238661 is 16683277628.

It can be written as a sum of positive squares in 4 ways, for example, as 4330429636 + 78346809025 = 65806^2 + 279905^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82677238661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82677238597 and 82677238606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82677238667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897031 + ... + 1940123.

It is an arithmetic number, because the mean of its divisors is an integer number (10360336275).

Almost surely, 2^82677238661 is an apocalyptic number.

It is an amenable number.

82677238661 is a deficient number, since it is larger than the sum of its proper divisors (205451539).

82677238661 is a wasteful number, since it uses less digits than its factorization.

82677238661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47815.

The product of its digits is 8128512, while the sum is 56.

The spelling of 82677238661 in words is "eighty-two billion, six hundred seventy-seven million, two hundred thirty-eight thousand, six hundred sixty-one".