11543633320 has 16 divisors (see below), whose sum is σ = 25973175060. Its totient is φ = 4617453312.

The previous prime is 11543633303. The next prime is 11543633347. The reversal of 11543633320 is 2333634511.

It can be written as a sum of positive squares in 2 ways, for example, as 11240664484 + 302968836 = 106022^2 + 17406^2 .

It is a super-2 number, since 2×11543633320² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144295377 + ... + 144295456.

Almost surely, 2^11543633320 is an apocalyptic number.

11543633320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11543633320 is an abundant number, since it is smaller than the sum of its proper divisors (14429541740).

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

11543633320 is a wasteful number, since it uses less digits than its factorization.

11543633320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288590844 (or 288590840 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 11543633320 in words is "eleven billion, five hundred forty-three million, six hundred thirty-three thousand, three hundred twenty".