82172306422799 has 8 divisors (see below), whose sum is σ = 82185332735520. Its totient is φ = 82159280872416.

The previous prime is 82172306422741. The next prime is 82172306422847. The reversal of 82172306422799 is 99722460327128.

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-82172306422799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82172306422709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238703069 + ... + 239047065.

It is an arithmetic number, because the mean of its divisors is an integer number (10273166591940).

Almost surely, 2^{82172306422799} is an apocalyptic number.

82172306422799 is a deficient number, since it is larger than the sum of its proper divisors (13026312721).

82172306422799 is a wasteful number, since it uses less digits than its factorization.

82172306422799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381169.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 82172306422799 in words is "eighty-two trillion, one hundred seventy-two billion, three hundred six million, four hundred twenty-two thousand, seven hundred ninety-nine".