44136321209 has 2 divisors, whose sum is σ = 44136321210. Its totient is φ = 44136321208.

The previous prime is 44136321157. The next prime is 44136321323. The reversal of 44136321209 is 90212363144.

44136321209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43400555584 + 735765625 = 208328^2 + 27125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44136321209 is a prime.

It is not a weakly prime, because it can be changed into another prime (44136321409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22068160604 + 22068160605.

It is an arithmetic number, because the mean of its divisors is an integer number (22068160605).

Almost surely, 2^44136321209 is an apocalyptic number.

It is an amenable number.

44136321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

44136321209 is an equidigital number, since it uses as much as digits as its factorization.

44136321209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 44136321209 in words is "forty-four billion, one hundred thirty-six million, three hundred twenty-one thousand, two hundred nine".