28964544139 has 2 divisors, whose sum is σ = 28964544140. Its totient is φ = 28964544138.

The previous prime is 28964544073. The next prime is 28964544151. The reversal of 28964544139 is 93144546982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28964544139 - 2¹³ = 28964535947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28964544139.

It is not a weakly prime, because it can be changed into another prime (28964544199) 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, 14482272069 + 14482272070.

It is an arithmetic number, because the mean of its divisors is an integer number (14482272070).

Almost surely, 2^28964544139 is an apocalyptic number.

28964544139 is a deficient number, since it is larger than the sum of its proper divisors (1).

28964544139 is an equidigital number, since it uses as much as digits as its factorization.

28964544139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 55.

The spelling of 28964544139 in words is "twenty-eight billion, nine hundred sixty-four million, five hundred forty-four thousand, one hundred thirty-nine".