622656432361321 has 2 divisors, whose sum is σ = 622656432361322. Its totient is φ = 622656432361320.

The previous prime is 622656432361261. The next prime is 622656432361331. The reversal of 622656432361321 is 123163234656226.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603981545473296 + 18674886888025 = 24576036^2 + 4321445^2 .

It is a cyclic number.

It is not a de Polignac number, because 622656432361321 - 2³¹ = 622654284877673 is a prime.

It is not a weakly prime, because it can be changed into another prime (622656432361331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311328216180660 + 311328216180661.

It is an arithmetic number, because the mean of its divisors is an integer number (311328216180661).

Almost surely, 2^{622656432361321} is an apocalyptic number.

It is an amenable number.

622656432361321 is a deficient number, since it is larger than the sum of its proper divisors (1).

622656432361321 is an equidigital number, since it uses as much as digits as its factorization.

622656432361321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 52.

The spelling of 622656432361321 in words is "six hundred twenty-two trillion, six hundred fifty-six billion, four hundred thirty-two million, three hundred sixty-one thousand, three hundred twenty-one".