28917166847 has 2 divisors, whose sum is σ = 28917166848. Its totient is φ = 28917166846.

The previous prime is 28917166841. The next prime is 28917166871. The reversal of 28917166847 is 74866171982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28917166847 - 2¹⁴ = 28917150463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28917166841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458583423 + 14458583424.

It is an arithmetic number, because the mean of its divisors is an integer number (14458583424).

Almost surely, 2^28917166847 is an apocalyptic number.

28917166847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28917166847 is an equidigital number, since it uses as much as digits as its factorization.

28917166847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 59.

The spelling of 28917166847 in words is "twenty-eight billion, nine hundred seventeen million, one hundred sixty-six thousand, eight hundred forty-seven".