641443412 has 24 divisors (see below), whose sum is σ = 1175731200. Its totient is φ = 305625056.

The previous prime is 641443403. The next prime is 641443417. The reversal of 641443412 is 214344146.

641443412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641443412² = 822899301596403488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641443417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11789 + ... + 37707.

It is an arithmetic number, because the mean of its divisors is an integer number (48988800).

Almost surely, 2^641443412 is an apocalyptic number.

It is an amenable number.

641443412 is a deficient number, since it is larger than the sum of its proper divisors (534287788).

641443412 is a wasteful number, since it uses less digits than its factorization.

641443412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26215 (or 26213 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 641443412 is about 25326.7331489871. The cubic root of 641443412 is about 862.4212514254.

Adding to 641443412 its reverse (214344146), we get a palindrome (855787558).

The spelling of 641443412 in words is "six hundred forty-one million, four hundred forty-three thousand, four hundred twelve".