5144645663 has 4 divisors (see below), whose sum is σ = 5209767840. Its totient is φ = 5079523488.

The previous prime is 5144645647. The next prime is 5144645687. The reversal of 5144645663 is 3665464415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3665464415 = 5 ⋅733092883.

It is a cyclic number.

It is not a de Polignac number, because 5144645663 - 2⁴ = 5144645647 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 (5144645263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32560970 + ... + 32561127.

It is an arithmetic number, because the mean of its divisors is an integer number (1302441960).

Almost surely, 2^5144645663 is an apocalyptic number.

5144645663 is a deficient number, since it is larger than the sum of its proper divisors (65122177).

5144645663 is an equidigital number, since it uses as much as digits as its factorization.

5144645663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65122176.

The product of its digits is 1036800, while the sum is 44.

The square root of 5144645663 is about 71726.1853370162. The cubic root of 5144645663 is about 1726.3088198205.

The spelling of 5144645663 in words is "five billion, one hundred forty-four million, six hundred forty-five thousand, six hundred sixty-three".