82444675557 has 4 divisors (see below), whose sum is σ = 109926234080. Its totient is φ = 54963117036.

The previous prime is 82444675513. The next prime is 82444675567. The reversal of 82444675557 is 75557644428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82444675557 - 2¹⁸ = 82444413413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82444675497 and 82444675506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82444675567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13740779257 + ... + 13740779262.

It is an arithmetic number, because the mean of its divisors is an integer number (27481558520).

Almost surely, 2^82444675557 is an apocalyptic number.

It is an amenable number.

82444675557 is a deficient number, since it is larger than the sum of its proper divisors (27481558523).

82444675557 is a wasteful number, since it uses less digits than its factorization.

82444675557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27481558522.

The product of its digits is 37632000, while the sum is 57.

The spelling of 82444675557 in words is "eighty-two billion, four hundred forty-four million, six hundred seventy-five thousand, five hundred fifty-seven".