11144897568 has 144 divisors (see below), whose sum is σ = 37562616000. Its totient is φ = 3184240896.

The previous prime is 11144897563. The next prime is 11144897591. The reversal of 11144897568 is 86579844111.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (11144897563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47943 + ... + 156806.

It is an arithmetic number, because the mean of its divisors is an integer number (260851500).

Almost surely, 2^11144897568 is an apocalyptic number.

11144897568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11144897568 is an abundant number, since it is smaller than the sum of its proper divisors (26417718432).

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

11144897568 is an equidigital number, since it uses as much as digits as its factorization.

11144897568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204781 (or 204761 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 11144897568 in words is "eleven billion, one hundred forty-four million, eight hundred ninety-seven thousand, five hundred sixty-eight".