987305866847 has 2 divisors, whose sum is σ = 987305866848. Its totient is φ = 987305866846.

The previous prime is 987305866831. The next prime is 987305866867. The reversal of 987305866847 is 748668503789.

It is a weak prime.

It is an emirp because it is prime and its reverse (748668503789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987305866847 - 2⁴ = 987305866831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987305866867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493652933423 + 493652933424.

It is an arithmetic number, because the mean of its divisors is an integer number (493652933424).

Almost surely, 2^987305866847 is an apocalyptic number.

987305866847 is a deficient number, since it is larger than the sum of its proper divisors (1).

987305866847 is an equidigital number, since it uses as much as digits as its factorization.

987305866847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 487710720, while the sum is 71.

The spelling of 987305866847 in words is "nine hundred eighty-seven billion, three hundred five million, eight hundred sixty-six thousand, eight hundred forty-seven".