80446005769 has 4 divisors (see below), whose sum is σ = 80453712196. Its totient is φ = 80438299344.

The previous prime is 80446005701. The next prime is 80446005781. The reversal of 80446005769 is 96750064408.

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 77513241744 + 2932764025 = 278412^2 + 54155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80446005769 - 2¹¹ = 80446003721 is a prime.

It is a super-2 number, since 2×80446005769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80446005169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3837534 + ... + 3858439.

It is an arithmetic number, because the mean of its divisors is an integer number (20113428049).

Almost surely, 2^80446005769 is an apocalyptic number.

It is an amenable number.

80446005769 is a deficient number, since it is larger than the sum of its proper divisors (7706427).

80446005769 is a wasteful number, since it uses less digits than its factorization.

80446005769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706426.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 80446005769 in words is "eighty billion, four hundred forty-six million, five thousand, seven hundred sixty-nine".