6842458745321 has 2 divisors, whose sum is σ = 6842458745322. Its totient is φ = 6842458745320.

The previous prime is 6842458745237. The next prime is 6842458745327. The reversal of 6842458745321 is 1235478542486.

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., 5017084813225 + 1825373932096 = 2239885^2 + 1351064^2 .

It is a cyclic number.

It is not a de Polignac number, because 6842458745321 - 2²² = 6842454551017 is a prime.

It is not a weakly prime, because it can be changed into another prime (6842458745327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421229372660 + 3421229372661.

It is an arithmetic number, because the mean of its divisors is an integer number (3421229372661).

Almost surely, 2^{6842458745321} is an apocalyptic number.

It is an amenable number.

6842458745321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6842458745321 is an equidigital number, since it uses as much as digits as its factorization.

6842458745321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51609600, while the sum is 59.

The spelling of 6842458745321 in words is "six trillion, eight hundred forty-two billion, four hundred fifty-eight million, seven hundred forty-five thousand, three hundred twenty-one".