28944559529 has 2 divisors, whose sum is σ = 28944559530. Its totient is φ = 28944559528.

The previous prime is 28944559463. The next prime is 28944559559. The reversal of 28944559529 is 92595544982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27964869529 + 979690000 = 167227^2 + 31300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28944559529 is a prime.

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 (28944559559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14472279764 + 14472279765.

It is an arithmetic number, because the mean of its divisors is an integer number (14472279765).

Almost surely, 2^28944559529 is an apocalyptic number.

It is an amenable number.

28944559529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28944559529 is an equidigital number, since it uses as much as digits as its factorization.

28944559529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 62.

The spelling of 28944559529 in words is "twenty-eight billion, nine hundred forty-four million, five hundred fifty-nine thousand, five hundred twenty-nine".