28917524287 has 2 divisors, whose sum is σ = 28917524288. Its totient is φ = 28917524286.

The previous prime is 28917524257. The next prime is 28917524299. The reversal of 28917524287 is 78242571982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28917524287 - 2¹¹ = 28917522239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28917524227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458762143 + 14458762144.

It is an arithmetic number, because the mean of its divisors is an integer number (14458762144).

Almost surely, 2^28917524287 is an apocalyptic number.

28917524287 is a deficient number, since it is larger than the sum of its proper divisors (1).

28917524287 is an equidigital number, since it uses as much as digits as its factorization.

28917524287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 55.

The spelling of 28917524287 in words is "twenty-eight billion, nine hundred seventeen million, five hundred twenty-four thousand, two hundred eighty-seven".