82061256443 has 4 divisors (see below), whose sum is σ = 86380269960. Its totient is φ = 77742242928.

The previous prime is 82061256283. The next prime is 82061256451. The reversal of 82061256443 is 34465216028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82061256443 - 2¹⁴ = 82061240059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82061256443.

It is not an unprimeable number, because it can be changed into a prime (82061256463) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2159506730 + ... + 2159506767.

It is an arithmetic number, because the mean of its divisors is an integer number (21595067490).

Almost surely, 2^82061256443 is an apocalyptic number.

82061256443 is a deficient number, since it is larger than the sum of its proper divisors (4319013517).

82061256443 is a wasteful number, since it uses less digits than its factorization.

82061256443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319013516.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 82061256443 in words is "eighty-two billion, sixty-one million, two hundred fifty-six thousand, four hundred forty-three".