11800644267 has 4 divisors (see below), whose sum is σ = 15734192360. Its totient is φ = 7867096176.

The previous prime is 11800644263. The next prime is 11800644277. The reversal of 11800644267 is 76244600811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76244600811 = 3 ⋅25414866937.

It is not a de Polignac number, because 11800644267 - 2² = 11800644263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11800644263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1966774042 + ... + 1966774047.

It is an arithmetic number, because the mean of its divisors is an integer number (3933548090).

Almost surely, 2^11800644267 is an apocalyptic number.

11800644267 is a deficient number, since it is larger than the sum of its proper divisors (3933548093).

11800644267 is an equidigital number, since it uses as much as digits as its factorization.

11800644267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933548092.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 11800644267 in words is "eleven billion, eight hundred million, six hundred forty-four thousand, two hundred sixty-seven".