406817885166 has 128 divisors (see below), whose sum is σ = 1061472632832. Its totient is φ = 100857312000.

The previous prime is 406817885129. The next prime is 406817885171. The reversal of 406817885166 is 661588718604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 850951 + ... + 1240061.

It is an arithmetic number, because the mean of its divisors is an integer number (8292754944).

Almost surely, 2^406817885166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406817885166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530736316416).

406817885166 is an abundant number, since it is smaller than the sum of its proper divisors (654654747666).

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

406817885166 is a wasteful number, since it uses less digits than its factorization.

406817885166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389238.

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 406817885166 in words is "four hundred six billion, eight hundred seventeen million, eight hundred eighty-five thousand, one hundred sixty-six".