326725563772009 has 2 divisors, whose sum is σ = 326725563772010. Its totient is φ = 326725563772008.

The previous prime is 326725563771977. The next prime is 326725563772109. The reversal of 326725563772009 is 900277365527623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186019184043225 + 140706379728784 = 13638885^2 + 11861972^2 .

It is a cyclic number.

It is not a de Polignac number, because 326725563772009 - 2⁵ = 326725563771977 is a prime.

It is not a weakly prime, because it can be changed into another prime (326725563772109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163362781886004 + 163362781886005.

It is an arithmetic number, because the mean of its divisors is an integer number (163362781886005).

Almost surely, 2^{326725563772009} is an apocalyptic number.

It is an amenable number.

326725563772009 is a deficient number, since it is larger than the sum of its proper divisors (1).

326725563772009 is an equidigital number, since it uses as much as digits as its factorization.

326725563772009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200037600, while the sum is 64.

The spelling of 326725563772009 in words is "three hundred twenty-six trillion, seven hundred twenty-five billion, five hundred sixty-three million, seven hundred seventy-two thousand, nine".