28133506879 has 2 divisors, whose sum is σ = 28133506880. Its totient is φ = 28133506878.

The previous prime is 28133506847. The next prime is 28133506901. The reversal of 28133506879 is 97860533182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28133506879 - 2⁵ = 28133506847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28133504879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14066753439 + 14066753440.

It is an arithmetic number, because the mean of its divisors is an integer number (14066753440).

Almost surely, 2^28133506879 is an apocalyptic number.

28133506879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28133506879 is an equidigital number, since it uses as much as digits as its factorization.

28133506879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 28133506879 in words is "twenty-eight billion, one hundred thirty-three million, five hundred six thousand, eight hundred seventy-nine".