641052011 has 2 divisors, whose sum is σ = 641052012. Its totient is φ = 641052010.

The previous prime is 641051953. The next prime is 641052053. The reversal of 641052011 is 110250146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641052011 - 2⁶ = 641051947 is a prime.

It is not a weakly prime, because it can be changed into another prime (641052211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320526005 + 320526006.

It is an arithmetic number, because the mean of its divisors is an integer number (320526006).

Almost surely, 2^641052011 is an apocalyptic number.

641052011 is a deficient number, since it is larger than the sum of its proper divisors (1).

641052011 is an equidigital number, since it uses as much as digits as its factorization.

641052011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 641052011 is about 25319.0049370033. The cubic root of 641052011 is about 862.2458027347.

The spelling of 641052011 in words is "six hundred forty-one million, fifty-two thousand, eleven".