6842390630393 has 2 divisors, whose sum is σ = 6842390630394. Its totient is φ = 6842390630392.

The previous prime is 6842390630321. The next prime is 6842390630429. The reversal of 6842390630393 is 3930360932486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5361114206464 + 1481276423929 = 2315408^2 + 1217077^2 .

It is a cyclic number.

It is not a de Polignac number, because 6842390630393 - 2⁸ = 6842390630137 is a prime.

It is not a weakly prime, because it can be changed into another prime (6842390630893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421195315196 + 3421195315197.

It is an arithmetic number, because the mean of its divisors is an integer number (3421195315197).

Almost surely, 2^{6842390630393} is an apocalyptic number.

It is an amenable number.

6842390630393 is a deficient number, since it is larger than the sum of its proper divisors (1).

6842390630393 is an equidigital number, since it uses as much as digits as its factorization.

6842390630393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15116544, while the sum is 56.

The spelling of 6842390630393 in words is "six trillion, eight hundred forty-two billion, three hundred ninety million, six hundred thirty thousand, three hundred ninety-three".