1266113563110 has 64 divisors (see below), whose sum is σ = 3683239464960. Its totient is φ = 306936620640.

The previous prime is 1266113563027. The next prime is 1266113563171. The reversal of 1266113563110 is 113653116621.

1266113563110 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 1 + 1 + 3 + 5 + 631 + 10 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213147462 + ... + 213153401.

It is an arithmetic number, because the mean of its divisors is an integer number (57550616640).

Almost surely, 2^{1266113563110} is an apocalyptic number.

1266113563110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266113563110 is an abundant number, since it is smaller than the sum of its proper divisors (2417125901850).

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

1266113563110 is a wasteful number, since it uses less digits than its factorization.

1266113563110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426300890 (or 426300884 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

Adding to 1266113563110 its reverse (113653116621), we get a palindrome (1379766679731).

The spelling of 1266113563110 in words is "one trillion, two hundred sixty-six billion, one hundred thirteen million, five hundred sixty-three thousand, one hundred ten".