641133335941 has 16 divisors (see below), whose sum is σ = 734309740800. Its totient is φ = 548354327040.

The previous prime is 641133335939. The next prime is 641133335957. The reversal of 641133335941 is 149533331146.

It is a cyclic number.

It is not a de Polignac number, because 641133335941 - 2¹ = 641133335939 is a prime.

It is a super-2 number, since 2×641133335941² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641133335971) 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 in 15 ways as a sum of consecutive naturals, for example, 8688895 + ... + 8762371.

It is an arithmetic number, because the mean of its divisors is an integer number (45894358800).

Almost surely, 2^641133335941 is an apocalyptic number.

It is an amenable number.

641133335941 is a deficient number, since it is larger than the sum of its proper divisors (93176404859).

641133335941 is a wasteful number, since it uses less digits than its factorization.

641133335941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76164.

The product of its digits is 349920, while the sum is 43.

The spelling of 641133335941 in words is "six hundred forty-one billion, one hundred thirty-three million, three hundred thirty-five thousand, nine hundred forty-one".