80166703105 has 4 divisors (see below), whose sum is σ = 96200043732. Its totient is φ = 64133362480.

The previous prime is 80166703073. The next prime is 80166703109. The reversal of 80166703105 is 50130766108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30180028176 + 49986674929 = 173724^2 + 223577^2 .

It is not a de Polignac number, because 80166703105 - 2⁵ = 80166703073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80166703109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8016670306 + ... + 8016670315.

It is an arithmetic number, because the mean of its divisors is an integer number (24050010933).

Almost surely, 2^80166703105 is an apocalyptic number.

It is an amenable number.

80166703105 is a deficient number, since it is larger than the sum of its proper divisors (16033340627).

80166703105 is a wasteful number, since it uses less digits than its factorization.

80166703105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16033340626.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 80166703105 in words is "eighty billion, one hundred sixty-six million, seven hundred three thousand, one hundred five".