82256781897 has 24 divisors (see below), whose sum is σ = 119961331776. Its totient is φ = 54309245856.

The previous prime is 82256781881. The next prime is 82256781913. The reversal of 82256781897 is 79818765228.

It is an interprime number because it is at equal distance from previous prime (82256781881) and next prime (82256781913).

It is not a de Polignac number, because 82256781897 - 2⁴ = 82256781881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82256781197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3848083 + ... + 3869399.

It is an arithmetic number, because the mean of its divisors is an integer number (4998388824).

Almost surely, 2^82256781897 is an apocalyptic number.

It is an amenable number.

82256781897 is a deficient number, since it is larger than the sum of its proper divisors (37704549879).

82256781897 is a wasteful number, since it uses less digits than its factorization.

82256781897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25437 (or 25434 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 63.

The spelling of 82256781897 in words is "eighty-two billion, two hundred fifty-six million, seven hundred eighty-one thousand, eight hundred ninety-seven".