28075175893 has 2 divisors, whose sum is σ = 28075175894. Its totient is φ = 28075175892.

The previous prime is 28075175857. The next prime is 28075175957. The reversal of 28075175893 is 39857157082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21233735524 + 6841440369 = 145718^2 + 82713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28075175893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28075175833) 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, 14037587946 + 14037587947.

It is an arithmetic number, because the mean of its divisors is an integer number (14037587947).

Almost surely, 2^28075175893 is an apocalyptic number.

It is an amenable number.

28075175893 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075175893 is an equidigital number, since it uses as much as digits as its factorization.

28075175893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 28075175893 in words is "twenty-eight billion, seventy-five million, one hundred seventy-five thousand, eight hundred ninety-three".