917772042241 has 2 divisors, whose sum is σ = 917772042242. Its totient is φ = 917772042240.

The previous prime is 917772042221. The next prime is 917772042247. The reversal of 917772042241 is 142240277719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 917771664016 + 378225 = 958004^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 917772042241 - 2²¹ = 917769945089 is a prime.

It is a super-3 number, since 3×917772042241³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 917772042191 and 917772042200.

It is not a weakly prime, because it can be changed into another prime (917772042247) 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, 458886021120 + 458886021121.

It is an arithmetic number, because the mean of its divisors is an integer number (458886021121).

Almost surely, 2^917772042241 is an apocalyptic number.

It is an amenable number.

917772042241 is a deficient number, since it is larger than the sum of its proper divisors (1).

917772042241 is an equidigital number, since it uses as much as digits as its factorization.

917772042241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 917772042241 in words is "nine hundred seventeen billion, seven hundred seventy-two million, forty-two thousand, two hundred forty-one".