641560145252 has 96 divisors (see below), whose sum is σ = 1245497121792. Its totient is φ = 287349866496.

The previous prime is 641560145221. The next prime is 641560145273. The reversal of 641560145252 is 252541065146.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75358148 + ... + 75366660.

It is an arithmetic number, because the mean of its divisors is an integer number (12973928352).

Almost surely, 2^641560145252 is an apocalyptic number.

It is an amenable number.

641560145252 is a deficient number, since it is larger than the sum of its proper divisors (603936976540).

641560145252 is a wasteful number, since it uses less digits than its factorization.

641560145252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8917 (or 8915 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 641560145252 in words is "six hundred forty-one billion, five hundred sixty million, one hundred forty-five thousand, two hundred fifty-two".