28185002663 has 2 divisors, whose sum is σ = 28185002664. Its totient is φ = 28185002662.

The previous prime is 28185002633. The next prime is 28185002711. The reversal of 28185002663 is 36620058182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28185002663 - 2⁸ = 28185002407 is a prime.

It is a super-2 number, since 2×28185002663² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28185002663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28185002633) 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, 14092501331 + 14092501332.

It is an arithmetic number, because the mean of its divisors is an integer number (14092501332).

Almost surely, 2^28185002663 is an apocalyptic number.

28185002663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28185002663 is an equidigital number, since it uses as much as digits as its factorization.

28185002663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 28185002663 in words is "twenty-eight billion, one hundred eighty-five million, two thousand, six hundred sixty-three".