80444440808053 has 6 divisors (see below), whose sum is σ = 93578227062486. Its totient is φ = 68952377835432.

The previous prime is 80444440808033. The next prime is 80444440808077. The reversal of 80444440808053 is 35080804444408.

It can be written as a sum of positive squares in only one way, i.e., 59872573881169 + 20571866926884 = 7737737^2 + 4535622^2 .

It is not a de Polignac number, because 80444440808053 - 2³³ = 80435850873461 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 (80444440808003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 820861640850 + ... + 820861640947.

It is an arithmetic number, because the mean of its divisors is an integer number (15596371177081).

Almost surely, 2^{80444440808053} is an apocalyptic number.

It is an amenable number.

80444440808053 is a deficient number, since it is larger than the sum of its proper divisors (13133786254433).

80444440808053 is a wasteful number, since it uses less digits than its factorization.

80444440808053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641723281811 (or 1641723281804 counting only the distinct ones).

The product of its (nonzero) digits is 7864320, while the sum is 52.

The spelling of 80444440808053 in words is "eighty trillion, four hundred forty-four billion, four hundred forty million, eight hundred eight thousand, fifty-three".