11726041891 has 8 divisors (see below), whose sum is σ = 12017862144. Its totient is φ = 11435985480.

The previous prime is 11726041889. The next prime is 11726041909. The reversal of 11726041891 is 19814062711.

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

It is not a de Polignac number, because 11726041891 - 2¹ = 11726041889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11726042891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427495 + ... + 454096.

It is an arithmetic number, because the mean of its divisors is an integer number (1502232768).

Almost surely, 2^11726041891 is an apocalyptic number.

11726041891 is a deficient number, since it is larger than the sum of its proper divisors (291820253).

11726041891 is an equidigital number, since it uses as much as digits as its factorization.

11726041891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881921.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 11726041891 in words is "eleven billion, seven hundred twenty-six million, forty-one thousand, eight hundred ninety-one".