7672323456221 has 2 divisors, whose sum is σ = 7672323456222. Its totient is φ = 7672323456220.

The previous prime is 7672323456181. The next prime is 7672323456223. The reversal of 7672323456221 is 1226543232767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6987378523225 + 684944932996 = 2643365^2 + 827614^2 .

It is a cyclic number.

It is not a de Polignac number, because 7672323456221 - 2¹⁰ = 7672323455197 is a prime.

Together with 7672323456223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7672323456221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7672323456223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3836161728110 + 3836161728111.

It is an arithmetic number, because the mean of its divisors is an integer number (3836161728111).

Almost surely, 2^{7672323456221} is an apocalyptic number.

It is an amenable number.

7672323456221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7672323456221 is an equidigital number, since it uses as much as digits as its factorization.

7672323456221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 50.

Adding to 7672323456221 its reverse (1226543232767), we get a palindrome (8898866688988).

The spelling of 7672323456221 in words is "seven trillion, six hundred seventy-two billion, three hundred twenty-three million, four hundred fifty-six thousand, two hundred twenty-one".