265645650946969 has 2 divisors, whose sum is σ = 265645650946970. Its totient is φ = 265645650946968.

The previous prime is 265645650946961. The next prime is 265645650946981. The reversal of 265645650946969 is 969649056546562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265549186662400 + 96464284569 = 16295680^2 + 310587^2 .

It is a cyclic number.

It is not a de Polignac number, because 265645650946969 - 2³ = 265645650946961 is a prime.

It is a super-2 number, since 2×265645650946969² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 265645650946892 and 265645650946901.

It is not a weakly prime, because it can be changed into another prime (265645650946961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132822825473484 + 132822825473485.

It is an arithmetic number, because the mean of its divisors is an integer number (132822825473485).

Almost surely, 2^{265645650946969} is an apocalyptic number.

It is an amenable number.

265645650946969 is a deficient number, since it is larger than the sum of its proper divisors (1).

265645650946969 is an equidigital number, since it uses as much as digits as its factorization.

265645650946969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22674816000, while the sum is 82.

The spelling of 265645650946969 in words is "two hundred sixty-five trillion, six hundred forty-five billion, six hundred fifty million, nine hundred forty-six thousand, nine hundred sixty-nine".