11872775949 has 4 divisors (see below), whose sum is σ = 15830367936. Its totient is φ = 7915183964.

The previous prime is 11872775947. The next prime is 11872775983. The reversal of 11872775949 is 94957727811.

11872775949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11872775949 - 2¹ = 11872775947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11872775892 and 11872775901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11872775947) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1978795989 + ... + 1978795994.

It is an arithmetic number, because the mean of its divisors is an integer number (3957591984).

Almost surely, 2^11872775949 is an apocalyptic number.

It is an amenable number.

11872775949 is a deficient number, since it is larger than the sum of its proper divisors (3957591987).

11872775949 is an equidigital number, since it uses as much as digits as its factorization.

11872775949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957591986.

The product of its digits is 8890560, while the sum is 60.

The spelling of 11872775949 in words is "eleven billion, eight hundred seventy-two million, seven hundred seventy-five thousand, nine hundred forty-nine".