326225288681 has 2 divisors, whose sum is σ = 326225288682. Its totient is φ = 326225288680.

The previous prime is 326225288651. The next prime is 326225288689. The reversal of 326225288681 is 186882522623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326035290025 + 189998656 = 570995^2 + 13784^2 .

It is a cyclic number.

It is not a de Polignac number, because 326225288681 - 2¹⁴ = 326225272297 is a prime.

It is a super-2 number, since 2×326225288681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (326225288689) 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, 163112644340 + 163112644341.

It is an arithmetic number, because the mean of its divisors is an integer number (163112644341).

Almost surely, 2^326225288681 is an apocalyptic number.

It is an amenable number.

326225288681 is a deficient number, since it is larger than the sum of its proper divisors (1).

326225288681 is an equidigital number, since it uses as much as digits as its factorization.

326225288681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4423680, while the sum is 53.

The spelling of 326225288681 in words is "three hundred twenty-six billion, two hundred twenty-five million, two hundred eighty-eight thousand, six hundred eighty-one".