28917617143 has 2 divisors, whose sum is σ = 28917617144. Its totient is φ = 28917617142.

The previous prime is 28917617137. The next prime is 28917617147. The reversal of 28917617143 is 34171671982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28917617143 - 2⁹ = 28917616631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28917617147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458808571 + 14458808572.

It is an arithmetic number, because the mean of its divisors is an integer number (14458808572).

Almost surely, 2^28917617143 is an apocalyptic number.

28917617143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28917617143 is an equidigital number, since it uses as much as digits as its factorization.

28917617143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The spelling of 28917617143 in words is "twenty-eight billion, nine hundred seventeen million, six hundred seventeen thousand, one hundred forty-three".