28871619017173 has 2 divisors, whose sum is σ = 28871619017174. Its totient is φ = 28871619017172.

The previous prime is 28871619017159. The next prime is 28871619017183. The reversal of 28871619017173 is 37171091617882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26407902655044 + 2463716362129 = 5138862^2 + 1569623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28871619017173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28871619017113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14435809508586 + 14435809508587.

It is an arithmetic number, because the mean of its divisors is an integer number (14435809508587).

Almost surely, 2^{28871619017173} is an apocalyptic number.

It is an amenable number.

28871619017173 is a deficient number, since it is larger than the sum of its proper divisors (1).

28871619017173 is an equidigital number, since it uses as much as digits as its factorization.

28871619017173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 61.

The spelling of 28871619017173 in words is "twenty-eight trillion, eight hundred seventy-one billion, six hundred nineteen million, seventeen thousand, one hundred seventy-three".