266257056560 has 40 divisors (see below), whose sum is σ = 675324718416. Its totient is φ = 96820747520.

The previous prime is 266257056557. The next prime is 266257056563. The reversal of 266257056560 is 65650752662.

266257056560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266257056557) and next prime (266257056563).

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 266257056499 and 266257056508.

It is not an unprimeable number, because it can be changed into a prime (266257056563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151281539 + ... + 151283298.

Almost surely, 2^266257056560 is an apocalyptic number.

266257056560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266257056560 is an abundant number, since it is smaller than the sum of its proper divisors (409067661856).

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

266257056560 is a wasteful number, since it uses less digits than its factorization.

266257056560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302564861 (or 302564855 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 266257056560 in words is "two hundred sixty-six billion, two hundred fifty-seven million, fifty-six thousand, five hundred sixty".