87743326217 has 2 divisors, whose sum is σ = 87743326218. Its totient is φ = 87743326216.

The previous prime is 87743326201. The next prime is 87743326271. The reversal of 87743326217 is 71262334778.

Together with next prime (87743326271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73031819536 + 14711506681 = 270244^2 + 121291^2 .

It is a cyclic number.

It is not a de Polignac number, because 87743326217 - 2⁴ = 87743326201 is a prime.

It is not a weakly prime, because it can be changed into another prime (87743326117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43871663108 + 43871663109.

It is an arithmetic number, because the mean of its divisors is an integer number (43871663109).

Almost surely, 2^87743326217 is an apocalyptic number.

It is an amenable number.

87743326217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87743326217 is an equidigital number, since it uses as much as digits as its factorization.

87743326217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 50.

The spelling of 87743326217 in words is "eighty-seven billion, seven hundred forty-three million, three hundred twenty-six thousand, two hundred seventeen".