641333717852 has 24 divisors (see below), whose sum is σ = 1161131613600. Its totient is φ = 309583665216.

The previous prime is 641333717813. The next prime is 641333717867. The reversal of 641333717852 is 258717333146.

It is a super-2 number, since 2×641333717852² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641333717852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211849 + ... + 1658687.

It is an arithmetic number, because the mean of its divisors is an integer number (48380483900).

Almost surely, 2^641333717852 is an apocalyptic number.

It is an amenable number.

641333717852 is a deficient number, since it is larger than the sum of its proper divisors (519797895748).

641333717852 is a wasteful number, since it uses less digits than its factorization.

641333717852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459245 (or 459243 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 50.

The spelling of 641333717852 in words is "six hundred forty-one billion, three hundred thirty-three million, seven hundred seventeen thousand, eight hundred fifty-two".