28357845133 has 2 divisors, whose sum is σ = 28357845134. Its totient is φ = 28357845132.

The previous prime is 28357845121. The next prime is 28357845161. The reversal of 28357845133 is 33154875382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26471940804 + 1885904329 = 162702^2 + 43427^2 .

It is a cyclic number.

It is not a de Polignac number, because 28357845133 - 2²⁹ = 27820974221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28357845433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178922566 + 14178922567.

It is an arithmetic number, because the mean of its divisors is an integer number (14178922567).

Almost surely, 2^28357845133 is an apocalyptic number.

It is an amenable number.

28357845133 is a deficient number, since it is larger than the sum of its proper divisors (1).

28357845133 is an equidigital number, since it uses as much as digits as its factorization.

28357845133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 49.

The spelling of 28357845133 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred forty-five thousand, one hundred thirty-three".