326513903909 has 16 divisors (see below), whose sum is σ = 348606103680. Its totient is φ = 304914093120.

The previous prime is 326513903897. The next prime is 326513903917. The reversal of 326513903909 is 909309315623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326513903909 is a prime.

It is a super-2 number, since 2×326513903909² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326513923909) 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, 8123867 + ... + 8163959.

It is an arithmetic number, because the mean of its divisors is an integer number (21787881480).

Almost surely, 2^326513903909 is an apocalyptic number.

It is an amenable number.

326513903909 is a deficient number, since it is larger than the sum of its proper divisors (22092199771).

326513903909 is a wasteful number, since it uses less digits than its factorization.

326513903909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46220.

The product of its (nonzero) digits is 1180980, while the sum is 50.

The spelling of 326513903909 in words is "three hundred twenty-six billion, five hundred thirteen million, nine hundred three thousand, nine hundred nine".