28285308263 has 2 divisors, whose sum is σ = 28285308264. Its totient is φ = 28285308262.

The previous prime is 28285308217. The next prime is 28285308287. The reversal of 28285308263 is 36280358282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28285308263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28285308463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14142654131 + 14142654132.

It is an arithmetic number, because the mean of its divisors is an integer number (14142654132).

Almost surely, 2^28285308263 is an apocalyptic number.

28285308263 is a deficient number, since it is larger than the sum of its proper divisors (1).

28285308263 is an equidigital number, since it uses as much as digits as its factorization.

28285308263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 28285308263 in words is "twenty-eight billion, two hundred eighty-five million, three hundred eight thousand, two hundred sixty-three".