6641274322489 has 27 divisors (see below), whose sum is σ = 6847714386669. Its totient is φ = 6441018177120.

The previous prime is 6641274322433. The next prime is 6641274322511. The reversal of 6641274322489 is 9842234721466.

The square root of 6641274322489 is 2577067.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 457696900089 + 6183577422400 = 676533^2 + 2486680^2 .

It is not a de Polignac number, because 6641274322489 - 2¹⁷ = 6641274191417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6641274322889) 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 26 ways as a sum of consecutive naturals, for example, 13047689967 + ... + 13047690475.

Almost surely, 2^{6641274322489} is an apocalyptic number.

6641274322489 is the 2577067-th square number.

6641274322489 is the 1288534-th centered octagonal number.

It is an amenable number.

6641274322489 is a deficient number, since it is larger than the sum of its proper divisors (206440064180).

6641274322489 is an frugal number, since it uses more digits than its factorization.

6641274322489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306 (or 653 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 58.

The spelling of 6641274322489 in words is "six trillion, six hundred forty-one billion, two hundred seventy-four million, three hundred twenty-two thousand, four hundred eighty-nine".