28935853993 has 2 divisors, whose sum is σ = 28935853994. Its totient is φ = 28935853992.

The previous prime is 28935853937. The next prime is 28935854021. The reversal of 28935853993 is 39935853982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20515405824 + 8420448169 = 143232^2 + 91763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28935853993 is a prime.

It is not a weakly prime, because it can be changed into another prime (28935859993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14467926996 + 14467926997.

It is an arithmetic number, because the mean of its divisors is an integer number (14467926997).

Almost surely, 2^28935853993 is an apocalyptic number.

It is an amenable number.

28935853993 is a deficient number, since it is larger than the sum of its proper divisors (1).

28935853993 is an equidigital number, since it uses as much as digits as its factorization.

28935853993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62985600, while the sum is 64.

The spelling of 28935853993 in words is "twenty-eight billion, nine hundred thirty-five million, eight hundred fifty-three thousand, nine hundred ninety-three".