7482028664221 has 2 divisors, whose sum is σ = 7482028664222. Its totient is φ = 7482028664220.

The previous prime is 7482028664207. The next prime is 7482028664249. The reversal of 7482028664221 is 1224668202847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6865128379321 + 616900284900 = 2620139^2 + 785430^2 .

It is a cyclic number.

It is not a de Polignac number, because 7482028664221 - 2¹⁷ = 7482028533149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7482028664021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3741014332110 + 3741014332111.

It is an arithmetic number, because the mean of its divisors is an integer number (3741014332111).

Almost surely, 2^{7482028664221} is an apocalyptic number.

It is an amenable number.

7482028664221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7482028664221 is an equidigital number, since it uses as much as digits as its factorization.

7482028664221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4128768, while the sum is 52.

The spelling of 7482028664221 in words is "seven trillion, four hundred eighty-two billion, twenty-eight million, six hundred sixty-four thousand, two hundred twenty-one".