82169021466 has 96 divisors (see below), whose sum is σ = 206459435520. Its totient is φ = 23133906432.

The previous prime is 82169021453. The next prime is 82169021489. The reversal of 82169021466 is 66412096128.

82169021466 is a `hidden beast` number, since 8 + 2 + 169 + 0 + 21 + 466 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2446495 + ... + 2479853.

It is an arithmetic number, because the mean of its divisors is an integer number (2150619120).

Almost surely, 2^82169021466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82169021466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103229717760).

82169021466 is an abundant number, since it is smaller than the sum of its proper divisors (124290414054).

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

82169021466 is a wasteful number, since it uses less digits than its factorization.

82169021466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33660 (or 33657 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 82169021466 in words is "eighty-two billion, one hundred sixty-nine million, twenty-one thousand, four hundred sixty-six".