3621808009117 has 2 divisors, whose sum is σ = 3621808009118. Its totient is φ = 3621808009116.

The previous prime is 3621808009037. The next prime is 3621808009199. The reversal of 3621808009117 is 7119008081263.

It is a happy number.

3621808009117 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., 2225076405561 + 1396731603556 = 1491669^2 + 1181834^2 .

It is a cyclic number.

It is not a de Polignac number, because 3621808009117 - 2³¹ = 3619660525469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3621808009517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1810904004558 + 1810904004559.

It is an arithmetic number, because the mean of its divisors is an integer number (1810904004559).

Almost surely, 2^{3621808009117} is an apocalyptic number.

It is an amenable number.

3621808009117 is a deficient number, since it is larger than the sum of its proper divisors (1).

3621808009117 is an equidigital number, since it uses as much as digits as its factorization.

3621808009117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 3621808009117 in words is "three trillion, six hundred twenty-one billion, eight hundred eight million, nine thousand, one hundred seventeen".