80078166 has 64 divisors (see below), whose sum is σ = 208373760. Its totient is φ = 22317120.

The previous prime is 80078161. The next prime is 80078171. The reversal of 80078166 is 66187008.

80078166 is nontrivially palindromic in base 5.

It is an interprime number because it is at equal distance from previous prime (80078161) and next prime (80078171).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80078166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80078161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12915 + ... + 18081.

It is an arithmetic number, because the mean of its divisors is an integer number (3255840).

Almost surely, 2^80078166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80078166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104186880).

80078166 is an abundant number, since it is smaller than the sum of its proper divisors (128295594).

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

80078166 is a wasteful number, since it uses less digits than its factorization.

80078166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226 (or 5220 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 80078166 is about 8948.6404553988. The cubic root of 80078166 is about 431.0272286098.

The spelling of 80078166 in words is "eighty million, seventy-eight thousand, one hundred sixty-six".