11541243420 has 192 divisors, whose sum is σ = 41873664000. Its totient is φ = 2637956160.

The previous prime is 11541243409. The next prime is 11541243529. The reversal of 11541243420 is 2434214511.

11541243420 is a `hidden beast` number, since 115 + 4 + 124 + 3 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154065 + ... + 216375.

It is an arithmetic number, because the mean of its divisors is an integer number (218092000).

Almost surely, 2^11541243420 is an apocalyptic number.

11541243420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11541243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20936832000).

11541243420 is an abundant number, since it is smaller than the sum of its proper divisors (30332420580).

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

11541243420 is a wasteful number, since it uses less digits than its factorization.

11541243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62350 (or 62328 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 11541243420 its reverse (2434214511), we get a palindrome (13975457931).

The spelling of 11541243420 in words is "eleven billion, five hundred forty-one million, two hundred forty-three thousand, four hundred twenty".