14144399921 has 2 divisors, whose sum is σ = 14144399922. Its totient is φ = 14144399920.

The previous prime is 14144399917. The next prime is 14144400041. The reversal of 14144399921 is 12999344141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14103937600 + 40462321 = 118760^2 + 6361^2 .

It is a cyclic number.

It is not a de Polignac number, because 14144399921 - 2² = 14144399917 is a prime.

It is not a weakly prime, because it can be changed into another prime (14144399911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7072199960 + 7072199961.

It is an arithmetic number, because the mean of its divisors is an integer number (7072199961).

Almost surely, 2^14144399921 is an apocalyptic number.

It is an amenable number.

14144399921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14144399921 is an equidigital number, since it uses as much as digits as its factorization.

14144399921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The spelling of 14144399921 in words is "fourteen billion, one hundred forty-four million, three hundred ninety-nine thousand, nine hundred twenty-one".