28078575167 has 2 divisors, whose sum is σ = 28078575168. Its totient is φ = 28078575166.

The previous prime is 28078575143. The next prime is 28078575233. The reversal of 28078575167 is 76157587082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078575167 - 2¹⁰ = 28078574143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28078575367) 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, 14039287583 + 14039287584.

It is an arithmetic number, because the mean of its divisors is an integer number (14039287584).

Almost surely, 2^28078575167 is an apocalyptic number.

28078575167 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078575167 is an equidigital number, since it uses as much as digits as its factorization.

28078575167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6585600, while the sum is 56.

The spelling of 28078575167 in words is "twenty-eight billion, seventy-eight million, five hundred seventy-five thousand, one hundred sixty-seven".