266269416169 has 9 divisors (see below), whose sum is σ = 272080043197. Its totient is φ = 260580372844.

The previous prime is 266269416163. The next prime is 266269416173. The reversal of 266269416169 is 961614962662.

It is a happy number.

The square root of 266269416169 is 516013.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 266269416169 - 2⁵ = 266269416137 is a prime.

It is a super-2 number, since 2×266269416169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266269416163) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24247122 + ... + 24258100.

Almost surely, 2^266269416169 is an apocalyptic number.

266269416169 is the 516013-rd square number.

266269416169 is the 258007-th centered octagonal number.

It is an amenable number.

266269416169 is a deficient number, since it is larger than the sum of its proper divisors (5810627028).

266269416169 is an frugal number, since it uses more digits than its factorization.

266269416169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22052 (or 11026 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 58.

The spelling of 266269416169 in words is "two hundred sixty-six billion, two hundred sixty-nine million, four hundred sixteen thousand, one hundred sixty-nine".