8913646343509 has 2 divisors, whose sum is σ = 8913646343510. Its totient is φ = 8913646343508.

The previous prime is 8913646343477. The next prime is 8913646343551. The reversal of 8913646343509 is 9053436463198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8880268880484 + 33377463025 = 2979978^2 + 182695^2 .

It is a cyclic number.

It is not a de Polignac number, because 8913646343509 - 2⁵ = 8913646343477 is a prime.

It is a super-2 number, since 2×8913646343509² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8913646343209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4456823171754 + 4456823171755.

It is an arithmetic number, because the mean of its divisors is an integer number (4456823171755).

Almost surely, 2^{8913646343509} is an apocalyptic number.

It is an amenable number.

8913646343509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8913646343509 is an equidigital number, since it uses as much as digits as its factorization.

8913646343509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50388480, while the sum is 61.

The spelling of 8913646343509 in words is "eight trillion, nine hundred thirteen billion, six hundred forty-six million, three hundred forty-three thousand, five hundred nine".