641333021141 has 2 divisors, whose sum is σ = 641333021142. Its totient is φ = 641333021140.

The previous prime is 641333021137. The next prime is 641333021179. The reversal of 641333021141 is 141120333146.

It is a happy number.

641333021141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470829268900 + 170503752241 = 686170^2 + 412921^2 .

It is a cyclic number.

It is not a de Polignac number, because 641333021141 - 2² = 641333021137 is a prime.

It is a super-2 number, since 2×641333021141² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641333021741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320666510570 + 320666510571.

It is an arithmetic number, because the mean of its divisors is an integer number (320666510571).

Almost surely, 2^641333021141 is an apocalyptic number.

It is an amenable number.

641333021141 is a deficient number, since it is larger than the sum of its proper divisors (1).

641333021141 is an equidigital number, since it uses as much as digits as its factorization.

641333021141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 641333021141 its reverse (141120333146), we get a palindrome (782453354287).

The spelling of 641333021141 in words is "six hundred forty-one billion, three hundred thirty-three million, twenty-one thousand, one hundred forty-one".