36573588581 has 2 divisors, whose sum is σ = 36573588582. Its totient is φ = 36573588580.

The previous prime is 36573588563. The next prime is 36573588607. The reversal of 36573588581 is 18588537563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35935268356 + 638320225 = 189566^2 + 25265^2 .

It is an emirp because it is prime and its reverse (18588537563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36573588581 - 2⁶ = 36573588517 is a prime.

It is a super-2 number, since 2×36573588581² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36573588581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36573588881) 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 as a sum of consecutive naturals, namely, 18286794290 + 18286794291.

It is an arithmetic number, because the mean of its divisors is an integer number (18286794291).

Almost surely, 2^36573588581 is an apocalyptic number.

It is an amenable number.

36573588581 is a deficient number, since it is larger than the sum of its proper divisors (1).

36573588581 is an equidigital number, since it uses as much as digits as its factorization.

36573588581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192000, while the sum is 59.

The spelling of 36573588581 in words is "thirty-six billion, five hundred seventy-three million, five hundred eighty-eight thousand, five hundred eighty-one".