28858885897 has 2 divisors, whose sum is σ = 28858885898. Its totient is φ = 28858885896.

The previous prime is 28858885751. The next prime is 28858885901. The reversal of 28858885897 is 79858885882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18545264761 + 10313621136 = 136181^2 + 101556^2 .

It is a cyclic number.

It is not a de Polignac number, because 28858885897 - 2¹¹ = 28858883849 is a prime.

It is not a weakly prime, because it can be changed into another prime (28858685897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429442948 + 14429442949.

It is an arithmetic number, because the mean of its divisors is an integer number (14429442949).

Almost surely, 2^28858885897 is an apocalyptic number.

It is an amenable number.

28858885897 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858885897 is an equidigital number, since it uses as much as digits as its factorization.

28858885897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 825753600, while the sum is 76.

The spelling of 28858885897 in words is "twenty-eight billion, eight hundred fifty-eight million, eight hundred eighty-five thousand, eight hundred ninety-seven".