641342306441 has 2 divisors, whose sum is σ = 641342306442. Its totient is φ = 641342306440.

The previous prime is 641342306291. The next prime is 641342306447. The reversal of 641342306441 is 144603243146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612587982400 + 28754324041 = 782680^2 + 169571^2 .

It is a cyclic number.

It is not a de Polignac number, because 641342306441 - 2¹⁸ = 641342044297 is a prime.

It is a super-2 number, since 2×641342306441² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 641342306395 and 641342306404.

It is not a weakly prime, because it can be changed into another prime (641342306447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320671153220 + 320671153221.

It is an arithmetic number, because the mean of its divisors is an integer number (320671153221).

Almost surely, 2^641342306441 is an apocalyptic number.

It is an amenable number.

641342306441 is a deficient number, since it is larger than the sum of its proper divisors (1).

641342306441 is an equidigital number, since it uses as much as digits as its factorization.

641342306441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 641342306441 its reverse (144603243146), we get a palindrome (785945549587).

The spelling of 641342306441 in words is "six hundred forty-one billion, three hundred forty-two million, three hundred six thousand, four hundred forty-one".