5644421015231 has 2 divisors, whose sum is σ = 5644421015232. Its totient is φ = 5644421015230.

The previous prime is 5644421015227. The next prime is 5644421015237. The reversal of 5644421015231 is 1325101244465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5644421015231 - 2² = 5644421015227 is a prime.

It is a super-2 number, since 2×5644421015231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644421015237) 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 as a sum of consecutive naturals, namely, 2822210507615 + 2822210507616.

It is an arithmetic number, because the mean of its divisors is an integer number (2822210507616).

Almost surely, 2^{5644421015231} is an apocalyptic number.

5644421015231 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644421015231 is an equidigital number, since it uses as much as digits as its factorization.

5644421015231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 5644421015231 its reverse (1325101244465), we get a palindrome (6969522259696).

The spelling of 5644421015231 in words is "five trillion, six hundred forty-four billion, four hundred twenty-one million, fifteen thousand, two hundred thirty-one".