36044305621 has 2 divisors, whose sum is σ = 36044305622. Its totient is φ = 36044305620.

The previous prime is 36044305579. The next prime is 36044305631. The reversal of 36044305621 is 12650344063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29099583396 + 6944722225 = 170586^2 + 83335^2 .

It is a cyclic number.

It is not a de Polignac number, because 36044305621 - 2¹¹ = 36044303573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36044305631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18022152810 + 18022152811.

It is an arithmetic number, because the mean of its divisors is an integer number (18022152811).

Almost surely, 2^36044305621 is an apocalyptic number.

It is an amenable number.

36044305621 is a deficient number, since it is larger than the sum of its proper divisors (1).

36044305621 is an equidigital number, since it uses as much as digits as its factorization.

36044305621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 36044305621 its reverse (12650344063), we get a palindrome (48694649684).

The spelling of 36044305621 in words is "thirty-six billion, forty-four million, three hundred five thousand, six hundred twenty-one".