641042445413 has 2 divisors, whose sum is σ = 641042445414. Its totient is φ = 641042445412.

The previous prime is 641042445299. The next prime is 641042445469. The reversal of 641042445413 is 314544240146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462538730404 + 178503715009 = 680102^2 + 422497^2 .

It is a cyclic number.

It is not a de Polignac number, because 641042445413 - 2²⁶ = 640975336549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641042445473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320521222706 + 320521222707.

It is an arithmetic number, because the mean of its divisors is an integer number (320521222707).

Almost surely, 2^641042445413 is an apocalyptic number.

It is an amenable number.

641042445413 is a deficient number, since it is larger than the sum of its proper divisors (1).

641042445413 is an equidigital number, since it uses as much as digits as its factorization.

641042445413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 641042445413 its reverse (314544240146), we get a palindrome (955586685559).

The spelling of 641042445413 in words is "six hundred forty-one billion, forty-two million, four hundred forty-five thousand, four hundred thirteen".