265206465053161 has 2 divisors, whose sum is σ = 265206465053162. Its totient is φ = 265206465053160.

The previous prime is 265206465053093. The next prime is 265206465053197. The reversal of 265206465053161 is 161350564602562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263970045594025 + 1236419459136 = 16247155^2 + 1111944^2 .

It is a cyclic number.

It is not a de Polignac number, because 265206465053161 - 2²¹ = 265206462956009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265206465053099 and 265206465053108.

It is not a weakly prime, because it can be changed into another prime (265206465051161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132603232526580 + 132603232526581.

It is an arithmetic number, because the mean of its divisors is an integer number (132603232526581).

Almost surely, 2^{265206465053161} is an apocalyptic number.

It is an amenable number.

265206465053161 is a deficient number, since it is larger than the sum of its proper divisors (1).

265206465053161 is an equidigital number, since it uses as much as digits as its factorization.

265206465053161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 265206465053161 in words is "two hundred sixty-five trillion, two hundred six billion, four hundred sixty-five million, fifty-three thousand, one hundred sixty-one".