11891114481 has 8 divisors (see below), whose sum is σ = 15856486240. Its totient is φ = 7926576192.

The previous prime is 11891114461. The next prime is 11891114537. The reversal of 11891114481 is 18441119811.

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

It is not a de Polignac number, because 11891114481 - 2⁵ = 11891114449 is a prime.

It is a super-2 number, since 2×11891114481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11891114401) 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 7 ways as a sum of consecutive naturals, for example, 174280 + ... + 232713.

It is an arithmetic number, because the mean of its divisors is an integer number (1982060780).

Almost surely, 2^11891114481 is an apocalyptic number.

It is an amenable number.

11891114481 is a deficient number, since it is larger than the sum of its proper divisors (3965371759).

11891114481 is an equidigital number, since it uses as much as digits as its factorization.

11891114481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416735.

The product of its digits is 9216, while the sum is 39.

The spelling of 11891114481 in words is "eleven billion, eight hundred ninety-one million, one hundred fourteen thousand, four hundred eighty-one".