11002109985 has 32 divisors (see below), whose sum is σ = 19806912000. Its totient is φ = 5793510528.

The previous prime is 11002109983. The next prime is 11002110011. The reversal of 11002109985 is 58990120011.

It is not a de Polignac number, because 11002109985 - 2¹ = 11002109983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11002109981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505140 + ... + 526469.

It is an arithmetic number, because the mean of its divisors is an integer number (618966000).

Almost surely, 2^11002109985 is an apocalyptic number.

11002109985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11002109985 is a deficient number, since it is larger than the sum of its proper divisors (8804802015).

11002109985 is a wasteful number, since it uses less digits than its factorization.

11002109985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031702 (or 1031696 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

Adding to 11002109985 its reverse (58990120011), we get a palindrome (69992229996).

The spelling of 11002109985 in words is "eleven billion, two million, one hundred nine thousand, nine hundred eighty-five".