3644020115009 has 2 divisors, whose sum is σ = 3644020115010. Its totient is φ = 3644020115008.

The previous prime is 3644020115003. The next prime is 3644020115017. The reversal of 3644020115009 is 9005110204463.

3644020115009 is digitally balanced in base 3, 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., 2848584450625 + 795435664384 = 1687775^2 + 891872^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644020115009 - 2¹⁶ = 3644020049473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3644020115009.

It is not a weakly prime, because it can be changed into another prime (3644020115003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822010057504 + 1822010057505.

It is an arithmetic number, because the mean of its divisors is an integer number (1822010057505).

Almost surely, 2^{3644020115009} is an apocalyptic number.

It is an amenable number.

3644020115009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644020115009 is an equidigital number, since it uses as much as digits as its factorization.

3644020115009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 3644020115009 in words is "three trillion, six hundred forty-four billion, twenty million, one hundred fifteen thousand, nine".