82645806405547 has 8 divisors (see below), whose sum is σ = 103038927466752. Its totient is φ = 64399329666600.

The previous prime is 82645806405523. The next prime is 82645806405559. The reversal of 82645806405547 is 74550460854628.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82645806405547 - 2¹¹ = 82645806403499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82645806405517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536661080479 + ... + 536661080632.

It is an arithmetic number, because the mean of its divisors is an integer number (12879865933344).

Almost surely, 2^{82645806405547} is an apocalyptic number.

82645806405547 is a deficient number, since it is larger than the sum of its proper divisors (20393121061205).

82645806405547 is a wasteful number, since it uses less digits than its factorization.

82645806405547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073322161129.

The product of its (nonzero) digits is 258048000, while the sum is 64.

The spelling of 82645806405547 in words is "eighty-two trillion, six hundred forty-five billion, eight hundred six million, four hundred five thousand, five hundred forty-seven".