8166342821208 has 128 divisors (see below), whose sum is σ = 24027670759680. Its totient is φ = 2280233802240.

The previous prime is 8166342821191. The next prime is 8166342821249. The reversal of 8166342821208 is 8021282436618.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180991 + ... + 4045422.

It is an arithmetic number, because the mean of its divisors is an integer number (187716177810).

Almost surely, 2^{8166342821208} is an apocalyptic number.

8166342821208 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8166342821208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12013835379840).

8166342821208 is an abundant number, since it is smaller than the sum of its proper divisors (15861327938472).

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

8166342821208 is a wasteful number, since it uses less digits than its factorization.

8166342821208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227009 (or 4227005 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 8166342821208 in words is "eight trillion, one hundred sixty-six billion, three hundred forty-two million, eight hundred twenty-one thousand, two hundred eight".