11541715220 has 48 divisors (see below), whose sum is σ = 28655303040. Its totient is φ = 3820704384.

The previous prime is 11541715193. The next prime is 11541715253. The reversal of 11541715220 is 2251714511.

11541715220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11541715220² (a number of 21 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1417334 + ... + 1425453.

It is an arithmetic number, because the mean of its divisors is an integer number (596985480).

Almost surely, 2^11541715220 is an apocalyptic number.

11541715220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11541715220 is an abundant number, since it is smaller than the sum of its proper divisors (17113587820).

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

11541715220 is a wasteful number, since it uses less digits than its factorization.

11541715220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842832 (or 2842830 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The spelling of 11541715220 in words is "eleven billion, five hundred forty-one million, seven hundred fifteen thousand, two hundred twenty".