11217489164 has 12 divisors (see below), whose sum is σ = 22434978384. Its totient is φ = 4807495344.

The previous prime is 11217489121. The next prime is 11217489169. The reversal of 11217489164 is 46198471211.

11217489164 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11217489169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200312279 + ... + 200312334.

It is an arithmetic number, because the mean of its divisors is an integer number (1869581532).

Almost surely, 2^11217489164 is an apocalyptic number.

11217489164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11217489164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11217489164 is a wasteful number, since it uses less digits than its factorization.

11217489164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400624624 (or 400624622 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The spelling of 11217489164 in words is "eleven billion, two hundred seventeen million, four hundred eighty-nine thousand, one hundred sixty-four".