3272945856421 has 2 divisors, whose sum is σ = 3272945856422. Its totient is φ = 3272945856420.

The previous prime is 3272945856371. The next prime is 3272945856461. The reversal of 3272945856421 is 1246585492723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2634567228225 + 638378628196 = 1623135^2 + 798986^2 .

It is a cyclic number.

It is not a de Polignac number, because 3272945856421 - 2¹⁹ = 3272945332133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3272945856461) 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, 1636472928210 + 1636472928211.

It is an arithmetic number, because the mean of its divisors is an integer number (1636472928211).

Almost surely, 2^{3272945856421} is an apocalyptic number.

It is an amenable number.

3272945856421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3272945856421 is an equidigital number, since it uses as much as digits as its factorization.

3272945856421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 58.

The spelling of 3272945856421 in words is "three trillion, two hundred seventy-two billion, nine hundred forty-five million, eight hundred fifty-six thousand, four hundred twenty-one".