11938972267 has 4 divisors (see below), whose sum is σ = 11947507600. Its totient is φ = 11930436936.

The previous prime is 11938972261. The next prime is 11938972303. The reversal of 11938972267 is 76227983911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76227983911 = 16741 ⋅4553371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11938972267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11938972261) 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, 4265568 + ... + 4268365.

It is an arithmetic number, because the mean of its divisors is an integer number (2986876900).

Almost surely, 2^11938972267 is an apocalyptic number.

11938972267 is a deficient number, since it is larger than the sum of its proper divisors (8535333).

11938972267 is an equidigital number, since it uses as much as digits as its factorization.

11938972267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8535332.

The product of its digits is 2286144, while the sum is 55.

The spelling of 11938972267 in words is "eleven billion, nine hundred thirty-eight million, nine hundred seventy-two thousand, two hundred sixty-seven".