265206443623213 has 2 divisors, whose sum is σ = 265206443623214. Its totient is φ = 265206443623212.

The previous prime is 265206443623183. The next prime is 265206443623223. The reversal of 265206443623213 is 312326344602562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262590260301769 + 2616183321444 = 16204637^2 + 1617462^2 .

It is a cyclic number.

It is not a de Polignac number, because 265206443623213 - 2⁴¹ = 263007420367661 is a prime.

It is a super-2 number, since 2×265206443623213² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265206443623223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132603221811606 + 132603221811607.

It is an arithmetic number, because the mean of its divisors is an integer number (132603221811607).

Almost surely, 2^{265206443623213} is an apocalyptic number.

It is an amenable number.

265206443623213 is a deficient number, since it is larger than the sum of its proper divisors (1).

265206443623213 is an equidigital number, since it uses as much as digits as its factorization.

265206443623213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 49.

The spelling of 265206443623213 in words is "two hundred sixty-five trillion, two hundred six billion, four hundred forty-three million, six hundred twenty-three thousand, two hundred thirteen".