11543040420 has 24 divisors (see below), whose sum is σ = 32320513344. Its totient is φ = 3078144096.

The previous prime is 11543040413. The next prime is 11543040463. The reversal of 11543040420 is 2404034511.

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, 96191944 + ... + 96192063.

It is an arithmetic number, because the mean of its divisors is an integer number (1346688056).

Almost surely, 2^11543040420 is an apocalyptic number.

11543040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11543040420 is an abundant number, since it is smaller than the sum of its proper divisors (20777472924).

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

11543040420 is a wasteful number, since it uses less digits than its factorization.

11543040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192384019 (or 192384017 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 11543040420 its reverse (2404034511), we get a palindrome (13947074931).

The spelling of 11543040420 in words is "eleven billion, five hundred forty-three million, forty thousand, four hundred twenty".