82572785178 has 96 divisors (see below), whose sum is σ = 190070300160. Its totient is φ = 23835539520.

The previous prime is 82572785171. The next prime is 82572785249. The reversal of 82572785178 is 87158727528.

It is not an unprimeable number, because it can be changed into a prime (82572785171) 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 47 ways as a sum of consecutive naturals, for example, 1963593 + ... + 2005203.

It is an arithmetic number, because the mean of its divisors is an integer number (1979898960).

Almost surely, 2^82572785178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82572785178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95035150080).

82572785178 is an abundant number, since it is smaller than the sum of its proper divisors (107497514982).

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

82572785178 is a wasteful number, since it uses less digits than its factorization.

82572785178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41764 (or 41751 counting only the distinct ones).

The product of its digits is 17561600, while the sum is 60.

The spelling of 82572785178 in words is "eighty-two billion, five hundred seventy-two million, seven hundred eighty-five thousand, one hundred seventy-eight".