28306421358539 has 2 divisors, whose sum is σ = 28306421358540. Its totient is φ = 28306421358538.

The previous prime is 28306421358473. The next prime is 28306421358563. The reversal of 28306421358539 is 93585312460382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28306421358539 - 2⁸ = 28306421358283 is a prime.

It is not a weakly prime, because it can be changed into another prime (28306421348539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14153210679269 + 14153210679270.

It is an arithmetic number, because the mean of its divisors is an integer number (14153210679270).

Almost surely, 2^{28306421358539} is an apocalyptic number.

28306421358539 is a deficient number, since it is larger than the sum of its proper divisors (1).

28306421358539 is an equidigital number, since it uses as much as digits as its factorization.

28306421358539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37324800, while the sum is 59.

The spelling of 28306421358539 in words is "twenty-eight trillion, three hundred six billion, four hundred twenty-one million, three hundred fifty-eight thousand, five hundred thirty-nine".