80728543273 has 8 divisors (see below), whose sum is σ = 92307408192. Its totient is φ = 69161232336.

The previous prime is 80728543271. The next prime is 80728543279. The reversal of 80728543273 is 37234582708.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80728543273 - 2¹ = 80728543271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80728543271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2873515 + ... + 2901472.

It is an arithmetic number, because the mean of its divisors is an integer number (11538426024).

Almost surely, 2^80728543273 is an apocalyptic number.

It is an amenable number.

80728543273 is a deficient number, since it is larger than the sum of its proper divisors (11578864919).

80728543273 is a wasteful number, since it uses less digits than its factorization.

80728543273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776991.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 80728543273 in words is "eighty billion, seven hundred twenty-eight million, five hundred forty-three thousand, two hundred seventy-three".