28144018787 has 2 divisors, whose sum is σ = 28144018788. Its totient is φ = 28144018786.

The previous prime is 28144018759. The next prime is 28144018841. The reversal of 28144018787 is 78781044182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28144018787 - 2⁸ = 28144018531 is a prime.

It is not a weakly prime, because it can be changed into another prime (28144018087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14072009393 + 14072009394.

It is an arithmetic number, because the mean of its divisors is an integer number (14072009394).

Almost surely, 2^28144018787 is an apocalyptic number.

28144018787 is a deficient number, since it is larger than the sum of its proper divisors (1).

28144018787 is an equidigital number, since it uses as much as digits as its factorization.

28144018787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 802816, while the sum is 50.

The spelling of 28144018787 in words is "twenty-eight billion, one hundred forty-four million, eighteen thousand, seven hundred eighty-seven".