641131443443500 has 24 divisors (see below), whose sum is σ = 1400231072481696. Its totient is φ = 256452577377200.

The previous prime is 641131443443483. The next prime is 641131443443501. The reversal of 641131443443500 is 5344344131146.

641131443443500 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 2×641131443443500² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641131443443501) 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, 641131442944 + ... + 641131443943.

It is an arithmetic number, because the mean of its divisors is an integer number (58342961353404).

Almost surely, 2^{641131443443500} is an apocalyptic number.

It is an amenable number.

641131443443500 is an abundant number, since it is smaller than the sum of its proper divisors (759099629038196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641131443443500 is a wasteful number, since it uses less digits than its factorization.

641131443443500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282262886906 (or 1282262886894 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

Adding to 641131443443500 its reverse (5344344131146), we get a palindrome (646475787574646).

The spelling of 641131443443500 in words is "six hundred forty-one trillion, one hundred thirty-one billion, four hundred forty-three million, four hundred forty-three thousand, five hundred".