28575216127 has 2 divisors, whose sum is σ = 28575216128. Its totient is φ = 28575216126.

The previous prime is 28575216073. The next prime is 28575216133. The reversal of 28575216127 is 72161257582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28575216127 - 2³¹ = 26427732479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28575216227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14287608063 + 14287608064.

It is an arithmetic number, because the mean of its divisors is an integer number (14287608064).

Almost surely, 2^28575216127 is an apocalyptic number.

28575216127 is a deficient number, since it is larger than the sum of its proper divisors (1).

28575216127 is an equidigital number, since it uses as much as digits as its factorization.

28575216127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 46.

The spelling of 28575216127 in words is "twenty-eight billion, five hundred seventy-five million, two hundred sixteen thousand, one hundred twenty-seven".