1266655112 has 12 divisors (see below), whose sum is σ = 2375167095. Its totient is φ = 633277224.

The previous prime is 1266655097. The next prime is 1266655139. The reversal of 1266655112 is 2115566621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 633327556 + 633327556 = 25166^2 + 25166^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25166.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 94373 + ... + 106955.

Almost surely, 2^1266655112 is an apocalyptic number.

It is an amenable number.

1266655112 is a deficient number, since it is larger than the sum of its proper divisors (1108511983).

1266655112 is an frugal number, since it uses more digits than its factorization.

1266655112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25172 (or 12585 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 1266655112 is about 35590.0985106813. The cubic root of 1266655112 is about 1081.9805655230.

The spelling of 1266655112 in words is "one billion, two hundred sixty-six million, six hundred fifty-five thousand, one hundred twelve".