80166309 has 16 divisors (see below), whose sum is σ = 111647040. Its totient is φ = 51114240.

The previous prime is 80166257. The next prime is 80166311. The reversal of 80166309 is 90366108.

It is not a de Polignac number, because 80166309 - 2²³ = 71777701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80166309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80166389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429 + ... + 12669.

It is an arithmetic number, because the mean of its divisors is an integer number (6977940).

Almost surely, 2^80166309 is an apocalyptic number.

It is an amenable number.

80166309 is a deficient number, since it is larger than the sum of its proper divisors (31480731).

80166309 is a wasteful number, since it uses less digits than its factorization.

80166309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 80166309 is about 8953.5640389735. The cubic root of 80166309 is about 431.1853162384.

The spelling of 80166309 in words is "eighty million, one hundred sixty-six thousand, three hundred nine".