20144144369 has 2 divisors, whose sum is σ = 20144144370. Its totient is φ = 20144144368.

The previous prime is 20144144347. The next prime is 20144144417. The reversal of 20144144369 is 96344144102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11435521969 + 8708622400 = 106937^2 + 93320^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144144369 - 2²⁸ = 19875708913 is a prime.

It is a super-2 number, since 2×20144144369² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20144144569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072072184 + 10072072185.

It is an arithmetic number, because the mean of its divisors is an integer number (10072072185).

Almost surely, 2^20144144369 is an apocalyptic number.

It is an amenable number.

20144144369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144144369 is an equidigital number, since it uses as much as digits as its factorization.

20144144369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 20144144369 in words is "twenty billion, one hundred forty-four million, one hundred forty-four thousand, three hundred sixty-nine".