28555834247 has 2 divisors, whose sum is σ = 28555834248. Its totient is φ = 28555834246.

The previous prime is 28555834213. The next prime is 28555834261. The reversal of 28555834247 is 74243855582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28555834247 - 2⁶ = 28555834183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28555834277) 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, 14277917123 + 14277917124.

It is an arithmetic number, because the mean of its divisors is an integer number (14277917124).

Almost surely, 2^28555834247 is an apocalyptic number.

28555834247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28555834247 is an equidigital number, since it uses as much as digits as its factorization.

28555834247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752000, while the sum is 53.

The spelling of 28555834247 in words is "twenty-eight billion, five hundred fifty-five million, eight hundred thirty-four thousand, two hundred forty-seven".