11151201440 has 24 divisors (see below), whose sum is σ = 26344713780. Its totient is φ = 4460480512.

The previous prime is 11151201421. The next prime is 11151201449. The reversal of 11151201440 is 4410215111.

It can be written as a sum of positive squares in 2 ways, for example, as 10385240464 + 765960976 = 101908^2 + 27676^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (11151201449) 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, 34847345 + ... + 34847664.

Almost surely, 2^11151201440 is an apocalyptic number.

11151201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11151201440 is an abundant number, since it is smaller than the sum of its proper divisors (15193512340).

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

11151201440 is an equidigital number, since it uses as much as digits as its factorization.

11151201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69695024 (or 69695016 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 11151201440 its reverse (4410215111), we get a palindrome (15561416551).

The spelling of 11151201440 in words is "eleven billion, one hundred fifty-one million, two hundred one thousand, four hundred forty".