215039351316017 has 2 divisors, whose sum is σ = 215039351316018. Its totient is φ = 215039351316016.

The previous prime is 215039351315839. The next prime is 215039351316037. The reversal of 215039351316017 is 710613153930512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136090866308401 + 78948485007616 = 11665799^2 + 8885296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215039351316017 is a prime.

It is a super-2 number, since 2×215039351316017² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (215039351316037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107519675658008 + 107519675658009.

It is an arithmetic number, because the mean of its divisors is an integer number (107519675658009).

Almost surely, 2^{215039351316017} is an apocalyptic number.

It is an amenable number.

215039351316017 is a deficient number, since it is larger than the sum of its proper divisors (1).

215039351316017 is an equidigital number, since it uses as much as digits as its factorization.

215039351316017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 47.

The spelling of 215039351316017 in words is "two hundred fifteen trillion, thirty-nine billion, three hundred fifty-one million, three hundred sixteen thousand, seventeen".