82173989347 has 8 divisors (see below), whose sum is σ = 84645350816. Its totient is φ = 79715809152.

The previous prime is 82173989311. The next prime is 82173989357. The reversal of 82173989347 is 74398937128.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82173989347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82173989357) 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 7 ways as a sum of consecutive naturals, for example, 3282663 + ... + 3307600.

It is an arithmetic number, because the mean of its divisors is an integer number (10580668852).

Almost surely, 2^82173989347 is an apocalyptic number.

82173989347 is a deficient number, since it is larger than the sum of its proper divisors (2471361469).

82173989347 is a wasteful number, since it uses less digits than its factorization.

82173989347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590637.

The product of its digits is 18289152, while the sum is 61.

The spelling of 82173989347 in words is "eighty-two billion, one hundred seventy-three million, nine hundred eighty-nine thousand, three hundred forty-seven".