11541504220 has 24 divisors (see below), whose sum is σ = 24362748144. Its totient is φ = 4592679936.

The previous prime is 11541504199. The next prime is 11541504257. The reversal of 11541504220 is 2240514511.

It is a congruent number.

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, 1491154 + ... + 1498873.

It is an arithmetic number, because the mean of its divisors is an integer number (1015114506).

Almost surely, 2^11541504220 is an apocalyptic number.

11541504220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11541504220 is an abundant number, since it is smaller than the sum of its proper divisors (12821243924).

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

11541504220 is a wasteful number, since it uses less digits than its factorization.

11541504220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990229 (or 2990227 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 11541504220 in words is "eleven billion, five hundred forty-one million, five hundred four thousand, two hundred twenty".