266159056 has 40 divisors (see below), whose sum is σ = 546742784. Its totient is φ = 125297280.

The previous prime is 266159053. The next prime is 266159077. The reversal of 266159056 is 650951662.

It is a super-2 number, since 2×266159056² = 141681286181622272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266159053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11101 + ... + 25603.

Almost surely, 2^266159056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266159056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273371392).

266159056 is an abundant number, since it is smaller than the sum of its proper divisors (280583728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266159056 is a wasteful number, since it uses less digits than its factorization.

266159056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14579 (or 14573 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 266159056 is about 16314.3818761239. The cubic root of 266159056 is about 643.2509197289.

The spelling of 266159056 in words is "two hundred sixty-six million, one hundred fifty-nine thousand, fifty-six".