6535554964641 has 20 divisors (see below), whose sum is σ = 9763125263892. Its totient is φ = 4356976061088.

The previous prime is 6535554964597. The next prime is 6535554964667. The reversal of 6535554964641 is 1464694555356.

6535554964641 is a `hidden beast` number, since 6 + 5 + 3 + 5 + 5 + 549 + 6 + 46 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3267793751616 + 3267761213025 = 1807704^2 + 1807695^2 .

It is not a de Polignac number, because 6535554964641 - 2²³ = 6535546576033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6535554964681) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5733871 + ... + 6778523.

Almost surely, 2^{6535554964641} is an apocalyptic number.

It is an amenable number.

6535554964641 is a deficient number, since it is larger than the sum of its proper divisors (3227570299251).

6535554964641 is a wasteful number, since it uses less digits than its factorization.

6535554964641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121902 (or 1121893 counting only the distinct ones).

The product of its digits is 233280000, while the sum is 63.

The spelling of 6535554964641 in words is "six trillion, five hundred thirty-five billion, five hundred fifty-four million, nine hundred sixty-four thousand, six hundred forty-one".