266261246055 has 48 divisors (see below), whose sum is σ = 528266479104. Its totient is φ = 121531204800.

The previous prime is 266261246047. The next prime is 266261246059. The reversal of 266261246055 is 550642162662.

266261246055 is a `hidden beast` number, since 2 + 6 + 6 + 26 + 12 + 4 + 605 + 5 = 666.

It is not a de Polignac number, because 266261246055 - 2³ = 266261246047 is a prime.

It is a super-2 number, since 2×266261246055² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 266261246055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266261246059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 449421 + ... + 857030.

It is an arithmetic number, because the mean of its divisors is an integer number (11005551648).

Almost surely, 2^266261246055 is an apocalyptic number.

266261246055 is a deficient number, since it is larger than the sum of its proper divisors (262005233049).

266261246055 is a wasteful number, since it uses less digits than its factorization.

266261246055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307116 (or 1307113 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 266261246055 in words is "two hundred sixty-six billion, two hundred sixty-one million, two hundred forty-six thousand, fifty-five".