11847890266 has 4 divisors (see below), whose sum is σ = 17771835402. Its totient is φ = 5923945132.

The previous prime is 11847890239. The next prime is 11847890267. The reversal of 11847890266 is 66209874811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7775536041 + 4072354225 = 88179^2 + 63815^2 .

It is not an unprimeable number, because it can be changed into a prime (11847890267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2961972565 + ... + 2961972568.

Almost surely, 2^11847890266 is an apocalyptic number.

11847890266 is a deficient number, since it is larger than the sum of its proper divisors (5923945136).

11847890266 is an equidigital number, since it uses as much as digits as its factorization.

11847890266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923945135.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 11847890266 in words is "eleven billion, eight hundred forty-seven million, eight hundred ninety thousand, two hundred sixty-six".