11884991291 has 8 divisors (see below), whose sum is σ = 11962336464. Its totient is φ = 11807700480.

The previous prime is 11884991267. The next prime is 11884991299. The reversal of 11884991291 is 19219948811.

11884991291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11884991291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11884991299) 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 7 ways as a sum of consecutive naturals, for example, 483695 + ... + 507671.

It is an arithmetic number, because the mean of its divisors is an integer number (1495292058).

Almost surely, 2^11884991291 is an apocalyptic number.

11884991291 is a deficient number, since it is larger than the sum of its proper divisors (77345173).

11884991291 is a wasteful number, since it uses less digits than its factorization.

11884991291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27181.

The product of its digits is 373248, while the sum is 53.

The spelling of 11884991291 in words is "eleven billion, eight hundred eighty-four million, nine hundred ninety-one thousand, two hundred ninety-one".