2644063117 has 4 divisors (see below), whose sum is σ = 2687408476. Its totient is φ = 2600717760.

The previous prime is 2644063109. The next prime is 2644063127. The reversal of 2644063117 is 7113604462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68906601 + 2575156516 = 8301^2 + 50746^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644063117 - 2³ = 2644063109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644063127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21672588 + ... + 21672709.

It is an arithmetic number, because the mean of its divisors is an integer number (671852119).

Almost surely, 2^2644063117 is an apocalyptic number.

It is an amenable number.

2644063117 is a deficient number, since it is larger than the sum of its proper divisors (43345359).

2644063117 is an equidigital number, since it uses as much as digits as its factorization.

2644063117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43345358.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2644063117 is about 51420.4542667604. The cubic root of 2644063117 is about 1382.7933193838.

Adding to 2644063117 its reverse (7113604462), we get a palindrome (9757667579).

The spelling of 2644063117 in words is "two billion, six hundred forty-four million, sixty-three thousand, one hundred seventeen".