28178887883 has 2 divisors, whose sum is σ = 28178887884. Its totient is φ = 28178887882.

The previous prime is 28178887853. The next prime is 28178887901. The reversal of 28178887883 is 38878887182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28178887883 - 2⁶ = 28178887819 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28178887853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14089443941 + 14089443942.

It is an arithmetic number, because the mean of its divisors is an integer number (14089443942).

Almost surely, 2^28178887883 is an apocalyptic number.

28178887883 is a deficient number, since it is larger than the sum of its proper divisors (1).

28178887883 is an equidigital number, since it uses as much as digits as its factorization.

28178887883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77070336, while the sum is 68.

The spelling of 28178887883 in words is "twenty-eight billion, one hundred seventy-eight million, eight hundred eighty-seven thousand, eight hundred eighty-three".