80444446727 has 4 divisors (see below), whose sum is σ = 80956831896. Its totient is φ = 79932061560.

The previous prime is 80444446679. The next prime is 80444446763. The reversal of 80444446727 is 72764444408.

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 80444446727 - 2¹⁰ = 80444445703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80444446787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256192349 + ... + 256192662.

It is an arithmetic number, because the mean of its divisors is an integer number (20239207974).

Almost surely, 2^80444446727 is an apocalyptic number.

80444446727 is a deficient number, since it is larger than the sum of its proper divisors (512385169).

80444446727 is a wasteful number, since it uses less digits than its factorization.

80444446727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512385168.

The product of its (nonzero) digits is 4816896, while the sum is 50.

The spelling of 80444446727 in words is "eighty billion, four hundred forty-four million, four hundred forty-six thousand, seven hundred twenty-seven".