641304987201 has 40 divisors (see below), whose sum is σ = 960966519744. Its totient is φ = 426214107360.

The previous prime is 641304987131. The next prime is 641304987203. The reversal of 641304987201 is 102789403146.

641304987201 is a `hidden beast` number, since 6 + 4 + 130 + 498 + 7 + 20 + 1 = 666.

It is not a de Polignac number, because 641304987201 - 2¹⁰ = 641304986177 is a prime.

It is a super-2 number, since 2×641304987201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641304987203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40267426 + ... + 40283348.

Almost surely, 2^641304987201 is an apocalyptic number.

It is an amenable number.

641304987201 is a deficient number, since it is larger than the sum of its proper divisors (319661532543).

641304987201 is a wasteful number, since it uses less digits than its factorization.

641304987201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443 (or 17434 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 641304987201 in words is "six hundred forty-one billion, three hundred four million, nine hundred eighty-seven thousand, two hundred one".