641332067643 has 24 divisors (see below), whose sum is σ = 967567255200. Its totient is φ = 408575376000.

The previous prime is 641332067611. The next prime is 641332067657. The reversal of 641332067643 is 346760233146.

It is not a de Polignac number, because 641332067643 - 2⁵ = 641332067611 is a prime.

It is a super-2 number, since 2×641332067643² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641332067683) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1259608 + ... + 1693893.

It is an arithmetic number, because the mean of its divisors is an integer number (40315302300).

Almost surely, 2^641332067643 is an apocalyptic number.

641332067643 is a deficient number, since it is larger than the sum of its proper divisors (326235187557).

641332067643 is a wasteful number, since it uses less digits than its factorization.

641332067643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954579 (or 2954576 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 641332067643 in words is "six hundred forty-one billion, three hundred thirty-two million, sixty-seven thousand, six hundred forty-three".