676213514321 has 2 divisors, whose sum is σ = 676213514322. Its totient is φ = 676213514320.

The previous prime is 676213514311. The next prime is 676213514329. The reversal of 676213514321 is 123415312676.

676213514321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648959136400 + 27254377921 = 805580^2 + 165089^2 .

It is a cyclic number.

It is not a de Polignac number, because 676213514321 - 2⁶ = 676213514257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (676213514329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338106757160 + 338106757161.

It is an arithmetic number, because the mean of its divisors is an integer number (338106757161).

Almost surely, 2^676213514321 is an apocalyptic number.

It is an amenable number.

676213514321 is a deficient number, since it is larger than the sum of its proper divisors (1).

676213514321 is an equidigital number, since it uses as much as digits as its factorization.

676213514321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

Adding to 676213514321 its reverse (123415312676), we get a palindrome (799628826997).

The spelling of 676213514321 in words is "six hundred seventy-six billion, two hundred thirteen million, five hundred fourteen thousand, three hundred twenty-one".