8395020475421 has 2 divisors, whose sum is σ = 8395020475422. Its totient is φ = 8395020475420.

The previous prime is 8395020475357. The next prime is 8395020475453. The reversal of 8395020475421 is 1245740205938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7241018155396 + 1154002320025 = 2690914^2 + 1074245^2 .

It is a cyclic number.

It is not a de Polignac number, because 8395020475421 - 2⁶ = 8395020475357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8395020475421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8395020475921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197510237710 + 4197510237711.

It is an arithmetic number, because the mean of its divisors is an integer number (4197510237711).

Almost surely, 2^{8395020475421} is an apocalyptic number.

It is an amenable number.

8395020475421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8395020475421 is an equidigital number, since it uses as much as digits as its factorization.

8395020475421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 8395020475421 in words is "eight trillion, three hundred ninety-five billion, twenty million, four hundred seventy-five thousand, four hundred twenty-one".