11541205550 has 24 divisors (see below), whose sum is σ = 24533306256. Its totient is φ = 3956984640.

The previous prime is 11541205541. The next prime is 11541205553. The reversal of 11541205550 is 5550214511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11541205553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16487087 + ... + 16487786.

It is an arithmetic number, because the mean of its divisors is an integer number (1022221094).

Almost surely, 2^11541205550 is an apocalyptic number.

11541205550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11541205550 is an abundant number, since it is smaller than the sum of its proper divisors (12992100706).

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

11541205550 is a wasteful number, since it uses less digits than its factorization.

11541205550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32974892 (or 32974887 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 11541205550 in words is "eleven billion, five hundred forty-one million, two hundred five thousand, five hundred fifty".