80135873 has 4 divisors (see below), whose sum is σ = 80153988. Its totient is φ = 80117760.

The previous prime is 80135827. The next prime is 80135911. The reversal of 80135873 is 37853108.

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 53993104 + 26142769 = 7348^2 + 5113^2 .

It is a cyclic number.

It is not a de Polignac number, because 80135873 - 2²⁴ = 63358657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80137873) 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, 2465 + ... + 12897.

It is an arithmetic number, because the mean of its divisors is an integer number (20038497).

Almost surely, 2^80135873 is an apocalyptic number.

It is an amenable number.

80135873 is a deficient number, since it is larger than the sum of its proper divisors (18115).

80135873 is a wasteful number, since it uses less digits than its factorization.

80135873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80135873 is about 8951.8642192562. The cubic root of 80135873 is about 431.1307412861.

The spelling of 80135873 in words is "eighty million, one hundred thirty-five thousand, eight hundred seventy-three".