80166809673 has 16 divisors (see below), whose sum is σ = 121527637440. Its totient is φ = 52201642752.

The previous prime is 80166809641. The next prime is 80166809683. The reversal of 80166809673 is 37690866108.

It is a happy number.

It is not a de Polignac number, because 80166809673 - 2⁵ = 80166809641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80166809623) 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, 34523736 + ... + 34526057.

It is an arithmetic number, because the mean of its divisors is an integer number (7595477340).

Almost surely, 2^80166809673 is an apocalyptic number.

It is an amenable number.

80166809673 is a deficient number, since it is larger than the sum of its proper divisors (41360827767).

80166809673 is a wasteful number, since it uses less digits than its factorization.

80166809673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69049845 (or 69049839 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 80166809673 in words is "eighty billion, one hundred sixty-six million, eight hundred nine thousand, six hundred seventy-three".