36664633725593 has 4 divisors (see below), whose sum is σ = 38821376885940. Its totient is φ = 34507890565248.

The previous prime is 36664633725589. The next prime is 36664633725631. The reversal of 36664633725593 is 39552733646663.

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 30881993922649 + 5782639802944 = 5557157^2 + 2404712^2 .

It is a cyclic number.

It is not a de Polignac number, because 36664633725593 - 2² = 36664633725589 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36664633725583) 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, 1078371580148 + ... + 1078371580181.

It is an arithmetic number, because the mean of its divisors is an integer number (9705344221485).

Almost surely, 2^{36664633725593} is an apocalyptic number.

It is an amenable number.

36664633725593 is a deficient number, since it is larger than the sum of its proper divisors (2156743160347).

36664633725593 is a wasteful number, since it uses less digits than its factorization.

36664633725593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156743160346.

The product of its digits is 1322697600, while the sum is 68.

The spelling of 36664633725593 in words is "thirty-six trillion, six hundred sixty-four billion, six hundred thirty-three million, seven hundred twenty-five thousand, five hundred ninety-three".