11761816266 has 24 divisors (see below), whose sum is σ = 25640284800. Its totient is φ = 3896551656.

The previous prime is 11761816211. The next prime is 11761816279. The reversal of 11761816266 is 66261816711.

11761816266 is a `hidden beast` number, since 1 + 1 + 7 + 6 + 18 + 1 + 626 + 6 = 666.

11761816266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001466 + ... + 2007333.

It is an arithmetic number, because the mean of its divisors is an integer number (1068345200).

Almost surely, 2^11761816266 is an apocalyptic number.

11761816266 is an abundant number, since it is smaller than the sum of its proper divisors (13878468534).

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

11761816266 is a wasteful number, since it uses less digits than its factorization.

11761816266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008970 (or 4008967 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 11761816266 in words is "eleven billion, seven hundred sixty-one million, eight hundred sixteen thousand, two hundred sixty-six".