80544061305 has 12 divisors (see below), whose sum is σ = 139609706340. Its totient is φ = 42956832672.

The previous prime is 80544061193. The next prime is 80544061327. The reversal of 80544061305 is 50316044508.

It is a happy number.

80544061305 is a `hidden beast` number, since 80 + 5 + 440 + 6 + 130 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50042137401 + 30501923904 = 223701^2 + 174648^2 .

It is not a de Polignac number, because 80544061305 - 2²⁶ = 80476952441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80544061305.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 894933970 + ... + 894934059.

It is an arithmetic number, because the mean of its divisors is an integer number (11634142195).

Almost surely, 2^80544061305 is an apocalyptic number.

It is an amenable number.

80544061305 is a deficient number, since it is larger than the sum of its proper divisors (59065645035).

80544061305 is a wasteful number, since it uses less digits than its factorization.

80544061305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789868040 (or 1789868037 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 80544061305 in words is "eighty billion, five hundred forty-four million, sixty-one thousand, three hundred five".