87108237217 has 2 divisors, whose sum is σ = 87108237218. Its totient is φ = 87108237216.

The previous prime is 87108237211. The next prime is 87108237233. The reversal of 87108237217 is 71273280178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57496366656 + 29611870561 = 239784^2 + 172081^2 .

It is a cyclic number.

It is not a de Polignac number, because 87108237217 - 2³¹ = 84960753569 is a prime.

It is not a weakly prime, because it can be changed into another prime (87108237211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43554118608 + 43554118609.

It is an arithmetic number, because the mean of its divisors is an integer number (43554118609).

Almost surely, 2^87108237217 is an apocalyptic number.

It is an amenable number.

87108237217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87108237217 is an equidigital number, since it uses as much as digits as its factorization.

87108237217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 87108237217 in words is "eighty-seven billion, one hundred eight million, two hundred thirty-seven thousand, two hundred seventeen".