14345321215509 has 16 divisors (see below), whose sum is σ = 21612536673600. Its totient is φ = 9401453450928.

The previous prime is 14345321215507. The next prime is 14345321215549. The reversal of 14345321215509 is 90551212354341.

14345321215509 is a `hidden beast` number, since 1 + 4 + 3 + 4 + 53 + 21 + 21 + 550 + 9 = 666.

It is not a de Polignac number, because 14345321215509 - 2¹ = 14345321215507 is a prime.

It is a super-2 number, since 2×14345321215509² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14345321215507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4502610214 + ... + 4502613399.

It is an arithmetic number, because the mean of its divisors is an integer number (1350783542100).

Almost surely, 2^{14345321215509} is an apocalyptic number.

It is an amenable number.

14345321215509 is a deficient number, since it is larger than the sum of its proper divisors (7267215458091).

14345321215509 is an equidigital number, since it uses as much as digits as its factorization.

14345321215509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9005223681 (or 9005223675 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 14345321215509 in words is "fourteen trillion, three hundred forty-five billion, three hundred twenty-one million, two hundred fifteen thousand, five hundred nine".