11011020989 has 16 divisors (see below), whose sum is σ = 12395192832. Its totient is φ = 9725683968.

The previous prime is 11011020983. The next prime is 11011020997. The reversal of 11011020989 is 98902011011.

11011020989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11011020989 - 2³² = 6716053693 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 (11011020983) 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 15 ways as a sum of consecutive naturals, for example, 244949 + ... + 286394.

It is an arithmetic number, because the mean of its divisors is an integer number (774699552).

Almost surely, 2^11011020989 is an apocalyptic number.

It is an amenable number.

11011020989 is a deficient number, since it is larger than the sum of its proper divisors (1384171843).

11011020989 is a wasteful number, since it uses less digits than its factorization.

11011020989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531436.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 11011020989 in words is "eleven billion, eleven million, twenty thousand, nine hundred eighty-nine".