11164170985 has 32 divisors (see below), whose sum is σ = 14699232000. Its totient is φ = 8072712960.

The previous prime is 11164170971. The next prime is 11164170989. The reversal of 11164170985 is 58907146111.

It is not a de Polignac number, because 11164170985 - 2³³ = 2574236393 is a prime.

It is a super-3 number, since 3×11164170985³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11164170989) 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, 10443031 + ... + 10444099.

It is an arithmetic number, because the mean of its divisors is an integer number (459351000).

Almost surely, 2^11164170985 is an apocalyptic number.

It is an amenable number.

11164170985 is a deficient number, since it is larger than the sum of its proper divisors (3535061015).

11164170985 is a wasteful number, since it uses less digits than its factorization.

11164170985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 11164170985 in words is "eleven billion, one hundred sixty-four million, one hundred seventy thousand, nine hundred eighty-five".