11543241320 has 64 divisors (see below), whose sum is σ = 28231701120. Its totient is φ = 4222266624.

The previous prime is 11543241319. The next prime is 11543241329. The reversal of 11543241320 is 2314234511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 11543241320.

It is not an unprimeable number, because it can be changed into a prime (11543241329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48092 + ... + 159371.

It is an arithmetic number, because the mean of its divisors is an integer number (441120330).

Almost surely, 2^11543241320 is an apocalyptic number.

11543241320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11543241320 is an abundant number, since it is smaller than the sum of its proper divisors (16688459800).

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

11543241320 is a wasteful number, since it uses less digits than its factorization.

11543241320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207594 (or 207590 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 11543241320 its reverse (2314234511), we get a palindrome (13857475831).

The spelling of 11543241320 in words is "eleven billion, five hundred forty-three million, two hundred forty-one thousand, three hundred twenty".