265143115534217 has 2 divisors, whose sum is σ = 265143115534218. Its totient is φ = 265143115534216.

The previous prime is 265143115534189. The next prime is 265143115534291. The reversal of 265143115534217 is 712435511341562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188098591729216 + 77044523805001 = 13714904^2 + 8777501^2 .

It is a cyclic number.

It is not a de Polignac number, because 265143115534217 - 2²² = 265143111339913 is a prime.

It is a super-2 number, since 2×265143115534217² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (265143115434217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132571557767108 + 132571557767109.

It is an arithmetic number, because the mean of its divisors is an integer number (132571557767109).

Almost surely, 2^{265143115534217} is an apocalyptic number.

It is an amenable number.

265143115534217 is a deficient number, since it is larger than the sum of its proper divisors (1).

265143115534217 is an equidigital number, since it uses as much as digits as its factorization.

265143115534217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024000, while the sum is 50.

Adding to 265143115534217 its reverse (712435511341562), we get a palindrome (977578626875779).

The spelling of 265143115534217 in words is "two hundred sixty-five trillion, one hundred forty-three billion, one hundred fifteen million, five hundred thirty-four thousand, two hundred seventeen".