641144011 has 2 divisors, whose sum is σ = 641144012. Its totient is φ = 641144010.

The previous prime is 641143991. The next prime is 641144027. The reversal of 641144011 is 110441146.

641144011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641144011 - 2⁹ = 641143499 is a prime.

It is a super-2 number, since 2×641144011² = 822131285682336242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641144071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320572005 + 320572006.

It is an arithmetic number, because the mean of its divisors is an integer number (320572006).

Almost surely, 2^641144011 is an apocalyptic number.

641144011 is a deficient number, since it is larger than the sum of its proper divisors (1).

641144011 is an equidigital number, since it uses as much as digits as its factorization.

641144011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 641144011 is about 25320.8216888789. The cubic root of 641144011 is about 862.2870489040.

Adding to 641144011 its reverse (110441146), we get a palindrome (751585157).

The spelling of 641144011 in words is "six hundred forty-one million, one hundred forty-four thousand, eleven".