11911840927 has 4 divisors (see below), whose sum is σ = 13613532496. Its totient is φ = 10210149360.

The previous prime is 11911840907. The next prime is 11911840949. The reversal of 11911840927 is 72904811911.

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

It is a cyclic number.

It is not a de Polignac number, because 11911840927 - 2¹⁵ = 11911808159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11911840907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850845774 + ... + 850845787.

It is an arithmetic number, because the mean of its divisors is an integer number (3403383124).

Almost surely, 2^11911840927 is an apocalyptic number.

11911840927 is a deficient number, since it is larger than the sum of its proper divisors (1701691569).

11911840927 is an equidigital number, since it uses as much as digits as its factorization.

11911840927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701691568.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 11911840927 in words is "eleven billion, nine hundred eleven million, eight hundred forty thousand, nine hundred twenty-seven".