87417158789 has 2 divisors, whose sum is σ = 87417158790. Its totient is φ = 87417158788.

The previous prime is 87417158701. The next prime is 87417158837. The reversal of 87417158789 is 98785171478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82723538689 + 4693620100 = 287617^2 + 68510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87417158789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87417158489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43708579394 + 43708579395.

It is an arithmetic number, because the mean of its divisors is an integer number (43708579395).

Almost surely, 2^87417158789 is an apocalyptic number.

It is an amenable number.

87417158789 is a deficient number, since it is larger than the sum of its proper divisors (1).

87417158789 is an equidigital number, since it uses as much as digits as its factorization.

87417158789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31610880, while the sum is 65.

The spelling of 87417158789 in words is "eighty-seven billion, four hundred seventeen million, one hundred fifty-eight thousand, seven hundred eighty-nine".