502257170421217 has 2 divisors, whose sum is σ = 502257170421218. Its totient is φ = 502257170421216.

The previous prime is 502257170421211. The next prime is 502257170421313. The reversal of 502257170421217 is 712124071752205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501260559544801 + 996610876416 = 22388849^2 + 998304^2 .

It is a cyclic number.

It is not a de Polignac number, because 502257170421217 - 2⁴³ = 493461077399009 is a prime.

It is a super-2 number, since 2×502257170421217² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (502257170421211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251128585210608 + 251128585210609.

It is an arithmetic number, because the mean of its divisors is an integer number (251128585210609).

Almost surely, 2^{502257170421217} is an apocalyptic number.

It is an amenable number.

502257170421217 is a deficient number, since it is larger than the sum of its proper divisors (1).

502257170421217 is an equidigital number, since it uses as much as digits as its factorization.

502257170421217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 548800, while the sum is 46.

The spelling of 502257170421217 in words is "five hundred two trillion, two hundred fifty-seven billion, one hundred seventy million, four hundred twenty-one thousand, two hundred seventeen".