11543255120 has 40 divisors (see below), whose sum is σ = 27763524360. Its totient is φ = 4458083840.

The previous prime is 11543255089. The next prime is 11543255147. The reversal of 11543255120 is 2155234511.

It can be written as a sum of positive squares in 4 ways, for example, as 2030764096 + 9512491024 = 45064^2 + 97532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485451 + ... + 2490090.

It is an arithmetic number, because the mean of its divisors is an integer number (694088109).

Almost surely, 2^11543255120 is an apocalyptic number.

11543255120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11543255120 is an abundant number, since it is smaller than the sum of its proper divisors (16220269240).

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

11543255120 is a wasteful number, since it uses less digits than its factorization.

11543255120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975583 (or 4975577 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 11543255120 its reverse (2155234511), we get a palindrome (13698489631).

The spelling of 11543255120 in words is "eleven billion, five hundred forty-three million, two hundred fifty-five thousand, one hundred twenty".