82665647002180 has 96 divisors (see below), whose sum is σ = 191184469257600. Its totient is φ = 29775052800000.

The previous prime is 82665647002163. The next prime is 82665647002181. The reversal of 82665647002180 is 8120074656628.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (82665647002181) 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 31 ways as a sum of consecutive naturals, for example, 5859396 + ... + 14130244.

It is an arithmetic number, because the mean of its divisors is an integer number (1991504888100).

Almost surely, 2^{82665647002180} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82665647002180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95592234628800).

82665647002180 is an abundant number, since it is smaller than the sum of its proper divisors (108518822255420).

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

82665647002180 is a wasteful number, since it uses less digits than its factorization.

82665647002180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271301 (or 8271299 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 82665647002180 in words is "eighty-two trillion, six hundred sixty-five billion, six hundred forty-seven million, two thousand, one hundred eighty".