99144444613 has 2 divisors, whose sum is σ = 99144444614. Its totient is φ = 99144444612.

The previous prime is 99144444611. The next prime is 99144444629. The reversal of 99144444613 is 31644444199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57462322369 + 41682122244 = 239713^2 + 204162^2 .

It is a cyclic number.

It is not a de Polignac number, because 99144444613 - 2¹ = 99144444611 is a prime.

Together with 99144444611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99144444611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49572222306 + 49572222307.

It is an arithmetic number, because the mean of its divisors is an integer number (49572222307).

Almost surely, 2^99144444613 is an apocalyptic number.

It is an amenable number.

99144444613 is a deficient number, since it is larger than the sum of its proper divisors (1).

99144444613 is an equidigital number, since it uses as much as digits as its factorization.

99144444613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 49.

The spelling of 99144444613 in words is "ninety-nine billion, one hundred forty-four million, four hundred forty-four thousand, six hundred thirteen".