28543549439 has 2 divisors, whose sum is σ = 28543549440. Its totient is φ = 28543549438.

The previous prime is 28543549427. The next prime is 28543549451. The reversal of 28543549439 is 93494534582.

It is a balanced prime because it is at equal distance from previous prime (28543549427) and next prime (28543549451).

It is a cyclic number.

It is not a de Polignac number, because 28543549439 - 2²⁴ = 28526772223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28543549409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14271774719 + 14271774720.

It is an arithmetic number, because the mean of its divisors is an integer number (14271774720).

Almost surely, 2^28543549439 is an apocalyptic number.

28543549439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28543549439 is an equidigital number, since it uses as much as digits as its factorization.

28543549439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 56.

The spelling of 28543549439 in words is "twenty-eight billion, five hundred forty-three million, five hundred forty-nine thousand, four hundred thirty-nine".