11161897344 has 192 divisors, whose sum is σ = 35396721360. Its totient is φ = 3354365952.

The previous prime is 11161897283. The next prime is 11161897367. The reversal of 11161897344 is 44379816111.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 11161897344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635302 + ... + 652634.

Almost surely, 2^11161897344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11161897344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17698360680).

11161897344 is an abundant number, since it is smaller than the sum of its proper divisors (24234824016).

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

11161897344 is a wasteful number, since it uses less digits than its factorization.

11161897344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17409 (or 17394 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 11161897344 in words is "eleven billion, one hundred sixty-one million, eight hundred ninety-seven thousand, three hundred forty-four".