28052799991 has 2 divisors, whose sum is σ = 28052799992. Its totient is φ = 28052799990.

The previous prime is 28052799979. The next prime is 28052799997. The reversal of 28052799991 is 19999725082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28052799991 - 2⁵ = 28052799959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28052799997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14026399995 + 14026399996.

It is an arithmetic number, because the mean of its divisors is an integer number (14026399996).

Almost surely, 2^28052799991 is an apocalyptic number.

28052799991 is a deficient number, since it is larger than the sum of its proper divisors (1).

28052799991 is an equidigital number, since it uses as much as digits as its factorization.

28052799991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The spelling of 28052799991 in words is "twenty-eight billion, fifty-two million, seven hundred ninety-nine thousand, nine hundred ninety-one".