641305544330 has 64 divisors (see below), whose sum is σ = 1291225235328. Its totient is φ = 227344316160.

The previous prime is 641305544293. The next prime is 641305544339. The reversal of 641305544330 is 33445503146.

It is a super-2 number, since 2×641305544330² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641305544339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564989 + ... + 1265631.

It is an arithmetic number, because the mean of its divisors is an integer number (20175394302).

Almost surely, 2^641305544330 is an apocalyptic number.

641305544330 is an abundant number, since it is smaller than the sum of its proper divisors (649919690998).

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

641305544330 is a wasteful number, since it uses less digits than its factorization.

641305544330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700871.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 641305544330 in words is "six hundred forty-one billion, three hundred five million, five hundred forty-four thousand, three hundred thirty".