82667710485845 has 16 divisors (see below), whose sum is σ = 99220615910640. Its totient is φ = 66121260547584.

The previous prime is 82667710485809. The next prime is 82667710485853. The reversal of 82667710485845 is 54858401776628.

It can be written as a sum of positive squares in 8 ways, for example, as 9833536407409 + 72834174078436 = 3135847^2 + 8534294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82667710485845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828010049 + ... + 828109881.

It is an arithmetic number, because the mean of its divisors is an integer number (6201288494415).

Almost surely, 2^{82667710485845} is an apocalyptic number.

It is an amenable number.

82667710485845 is a deficient number, since it is larger than the sum of its proper divisors (16552905424795).

82667710485845 is a wasteful number, since it uses less digits than its factorization.

82667710485845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130504.

The product of its (nonzero) digits is 722534400, while the sum is 71.

The spelling of 82667710485845 in words is "eighty-two trillion, six hundred sixty-seven billion, seven hundred ten million, four hundred eighty-five thousand, eight hundred forty-five".