28054931385589 has 2 divisors, whose sum is σ = 28054931385590. Its totient is φ = 28054931385588.

The previous prime is 28054931385571. The next prime is 28054931385659. The reversal of 28054931385589 is 98558313945082.

It is an a-pointer prime, because the next prime (28054931385659) can be obtained adding 28054931385589 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28045317583089 + 9613802500 = 5295783^2 + 98050^2 .

It is a cyclic number.

It is not a de Polignac number, because 28054931385589 - 2⁷ = 28054931385461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28054931385389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027465692794 + 14027465692795.

It is an arithmetic number, because the mean of its divisors is an integer number (14027465692795).

Almost surely, 2^{28054931385589} is an apocalyptic number.

It is an amenable number.

28054931385589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28054931385589 is an equidigital number, since it uses as much as digits as its factorization.

28054931385589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248000, while the sum is 70.

The spelling of 28054931385589 in words is "twenty-eight trillion, fifty-four billion, nine hundred thirty-one million, three hundred eighty-five thousand, five hundred eighty-nine".