28753731887 has 2 divisors, whose sum is σ = 28753731888. Its totient is φ = 28753731886.

The previous prime is 28753731841. The next prime is 28753731961. The reversal of 28753731887 is 78813735782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28753731887 - 2⁶ = 28753731823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28753731817) 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, 14376865943 + 14376865944.

It is an arithmetic number, because the mean of its divisors is an integer number (14376865944).

Almost surely, 2^28753731887 is an apocalyptic number.

28753731887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28753731887 is an equidigital number, since it uses as much as digits as its factorization.

28753731887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15805440, while the sum is 59.

The spelling of 28753731887 in words is "twenty-eight billion, seven hundred fifty-three million, seven hundred thirty-one thousand, eight hundred eighty-seven".