80136673 has 4 divisors (see below), whose sum is σ = 82091268. Its totient is φ = 78182080.

The previous prime is 80136671. The next prime is 80136677. The reversal of 80136673 is 37663108.

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 23931664 + 56205009 = 4892^2 + 7497^2 .

It is not a de Polignac number, because 80136673 - 2¹ = 80136671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80136671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977236 + ... + 977317.

It is an arithmetic number, because the mean of its divisors is an integer number (20522817).

Almost surely, 2^80136673 is an apocalyptic number.

It is an amenable number.

80136673 is a deficient number, since it is larger than the sum of its proper divisors (1954595).

80136673 is a wasteful number, since it uses less digits than its factorization.

80136673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954594.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 80136673 is about 8951.9089025749. The cubic root of 80136673 is about 431.1321759472.

The spelling of 80136673 in words is "eighty million, one hundred thirty-six thousand, six hundred seventy-three".