28341991127 has 2 divisors, whose sum is σ = 28341991128. Its totient is φ = 28341991126.

The previous prime is 28341991091. The next prime is 28341991187. The reversal of 28341991127 is 72119914382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28341991127 - 2¹² = 28341987031 is a prime.

It is a super-2 number, since 2×28341991127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28341991187) 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, 14170995563 + 14170995564.

It is an arithmetic number, because the mean of its divisors is an integer number (14170995564).

Almost surely, 2^28341991127 is an apocalyptic number.

28341991127 is a deficient number, since it is larger than the sum of its proper divisors (1).

28341991127 is an equidigital number, since it uses as much as digits as its factorization.

28341991127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The spelling of 28341991127 in words is "twenty-eight billion, three hundred forty-one million, nine hundred ninety-one thousand, one hundred twenty-seven".