8256414122321 has 2 divisors, whose sum is σ = 8256414122322. Its totient is φ = 8256414122320.

The previous prime is 8256414122291. The next prime is 8256414122381. The reversal of 8256414122321 is 1232214146528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4542699712321 + 3713714410000 = 2131361^2 + 1927100^2 .

It is a cyclic number.

It is not a de Polignac number, because 8256414122321 - 2³⁴ = 8239234253137 is a prime.

It is not a weakly prime, because it can be changed into another prime (8256414122381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128207061160 + 4128207061161.

It is an arithmetic number, because the mean of its divisors is an integer number (4128207061161).

Almost surely, 2^{8256414122321} is an apocalyptic number.

It is an amenable number.

8256414122321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256414122321 is an equidigital number, since it uses as much as digits as its factorization.

8256414122321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 41.

Adding to 8256414122321 its reverse (1232214146528), we get a palindrome (9488628268849).

The spelling of 8256414122321 in words is "eight trillion, two hundred fifty-six billion, four hundred fourteen million, one hundred twenty-two thousand, three hundred twenty-one".