82172859582 has 24 divisors (see below), whose sum is σ = 180644469768. Its totient is φ = 24900866320.

The previous prime is 82172859581. The next prime is 82172859583. The reversal of 82172859582 is 28595827128.

It is an interprime number because it is at equal distance from previous prime (82172859581) and next prime (82172859583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82172859581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56592153 + ... + 56593604.

It is an arithmetic number, because the mean of its divisors is an integer number (7526852907).

Almost surely, 2^82172859582 is an apocalyptic number.

82172859582 is an abundant number, since it is smaller than the sum of its proper divisors (98471610186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82172859582 is a wasteful number, since it uses less digits than its factorization.

82172859582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113185784 (or 113185773 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 57.

The spelling of 82172859582 in words is "eighty-two billion, one hundred seventy-two million, eight hundred fifty-nine thousand, five hundred eighty-two".