641031226443 has 12 divisors (see below), whose sum is σ = 926505932040. Its totient is φ = 427090179456.

The previous prime is 641031226411. The next prime is 641031226489. The reversal of 641031226443 is 344622130146.

641031226443 is a `hidden beast` number, since 6 + 4 + 1 + 0 + 3 + 1 + 2 + 2 + 644 + 3 = 666.

It is not a de Polignac number, because 641031226443 - 2⁵ = 641031226411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 641031226398 and 641031226407.

It is not an unprimeable number, because it can be changed into a prime (641031221443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21982246 + ... + 22011387.

It is an arithmetic number, because the mean of its divisors is an integer number (77208827670).

Almost surely, 2^641031226443 is an apocalyptic number.

641031226443 is a deficient number, since it is larger than the sum of its proper divisors (285474705597).

641031226443 is a wasteful number, since it uses less digits than its factorization.

641031226443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43995258 (or 43995255 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 641031226443 its reverse (344622130146), we get a palindrome (985653356589).

The spelling of 641031226443 in words is "six hundred forty-one billion, thirty-one million, two hundred twenty-six thousand, four hundred forty-three".