82645546281 has 32 divisors (see below), whose sum is σ = 116103604608. Its totient is φ = 52235850240.

The previous prime is 82645546273. The next prime is 82645546303. The reversal of 82645546281 is 18264554628.

It is a happy number.

It is not a de Polignac number, because 82645546281 - 2³ = 82645546273 is a prime.

It is a super-2 number, since 2×82645546281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82645546261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 667461 + ... + 781533.

It is an arithmetic number, because the mean of its divisors is an integer number (3628237644).

Almost surely, 2^82645546281 is an apocalyptic number.

It is an amenable number.

82645546281 is a deficient number, since it is larger than the sum of its proper divisors (33458058327).

82645546281 is a wasteful number, since it uses less digits than its factorization.

82645546281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114281.

The product of its digits is 3686400, while the sum is 51.

The spelling of 82645546281 in words is "eighty-two billion, six hundred forty-five million, five hundred forty-six thousand, two hundred eighty-one".