11161320288 has 48 divisors (see below), whose sum is σ = 29304446976. Its totient is φ = 3719680640.

The previous prime is 11161320283. The next prime is 11161320319. The reversal of 11161320288 is 88202316111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161320283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655045 + ... + 671867.

It is an arithmetic number, because the mean of its divisors is an integer number (610509312).

Almost surely, 2^11161320288 is an apocalyptic number.

It is an amenable number.

11161320288 is an abundant number, since it is smaller than the sum of its proper divisors (18143126688).

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

11161320288 is a wasteful number, since it uses less digits than its factorization.

11161320288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23747 (or 23739 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

Adding to 11161320288 its reverse (88202316111), we get a palindrome (99363636399).

The spelling of 11161320288 in words is "eleven billion, one hundred sixty-one million, three hundred twenty thousand, two hundred eighty-eight".