1421165258393 has 2 divisors, whose sum is σ = 1421165258394. Its totient is φ = 1421165258392.

The previous prime is 1421165258351. The next prime is 1421165258399. The reversal of 1421165258393 is 3938525611241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1071893714329 + 349271544064 = 1035323^2 + 590992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421165258393 - 2²⁸ = 1420896822937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421165258399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710582629196 + 710582629197.

It is an arithmetic number, because the mean of its divisors is an integer number (710582629197).

Almost surely, 2^{1421165258393} is an apocalyptic number.

It is an amenable number.

1421165258393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421165258393 is an equidigital number, since it uses as much as digits as its factorization.

1421165258393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 50.

The spelling of 1421165258393 in words is "one trillion, four hundred twenty-one billion, one hundred sixty-five million, two hundred fifty-eight thousand, three hundred ninety-three".