11011100989 has 8 divisors (see below), whose sum is σ = 13246437440. Its totient is φ = 8941345056.

The previous prime is 11011100981. The next prime is 11011101011. The reversal of 11011100989 is 98900111011.

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

It is not a de Polignac number, because 11011100989 - 2³ = 11011100981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011100989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011100981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41394984 + ... + 41395249.

It is an arithmetic number, because the mean of its divisors is an integer number (1655804680).

Almost surely, 2^11011100989 is an apocalyptic number.

11011100989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11011100989 is a deficient number, since it is larger than the sum of its proper divisors (2235336451).

11011100989 is an equidigital number, since it uses as much as digits as its factorization.

11011100989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82790259.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 11011100989 in words is "eleven billion, eleven million, one hundred thousand, nine hundred eighty-nine".