80216443 has 4 divisors (see below), whose sum is σ = 80254008. Its totient is φ = 80178880.

The previous prime is 80216419. The next prime is 80216471. The reversal of 80216443 is 34461208.

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

It is a cyclic number.

It is not a de Polignac number, because 80216443 - 2¹⁷ = 80085371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80216413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15373 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (20063502).

Almost surely, 2^80216443 is an apocalyptic number.

80216443 is a deficient number, since it is larger than the sum of its proper divisors (37565).

80216443 is a wasteful number, since it uses less digits than its factorization.

80216443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37564.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 80216443 is about 8956.3632686487. The cubic root of 80216443 is about 431.2751816704.

The spelling of 80216443 in words is "eighty million, two hundred sixteen thousand, four hundred forty-three".