28075175857 has 2 divisors, whose sum is σ = 28075175858. Its totient is φ = 28075175856.

The previous prime is 28075175833. The next prime is 28075175893. The reversal of 28075175857 is 75857157082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23444509456 + 4630666401 = 153116^2 + 68049^2 .

It is a cyclic number.

It is not a de Polignac number, because 28075175857 - 2¹⁹ = 28074651569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28075175798 and 28075175807.

It is not a weakly prime, because it can be changed into another prime (28075175957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14037587928 + 14037587929.

It is an arithmetic number, because the mean of its divisors is an integer number (14037587929).

Almost surely, 2^28075175857 is an apocalyptic number.

It is an amenable number.

28075175857 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075175857 is an equidigital number, since it uses as much as digits as its factorization.

28075175857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5488000, while the sum is 55.

The spelling of 28075175857 in words is "twenty-eight billion, seventy-five million, one hundred seventy-five thousand, eight hundred fifty-seven".