11555551350 has 144 divisors (see below), whose sum is σ = 35519298048. Its totient is φ = 2638422720.

The previous prime is 11555551331. The next prime is 11555551361. The reversal of 11555551350 is 5315555511.

11555551350 is a `hidden beast` number, since 1 + 1 + 5 + 55 + 551 + 3 + 50 = 666.

11555551350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 71 ways as a sum of consecutive naturals, for example, 4682817 + ... + 4685283.

It is an arithmetic number, because the mean of its divisors is an integer number (246661792).

Almost surely, 2^11555551350 is an apocalyptic number.

11555551350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11555551350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17759649024).

11555551350 is an abundant number, since it is smaller than the sum of its proper divisors (23963746698).

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

11555551350 is a wasteful number, since it uses less digits than its factorization.

11555551350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979 (or 3971 counting only the distinct ones).

The product of its (nonzero) digits is 46875, while the sum is 36.

The spelling of 11555551350 in words is "eleven billion, five hundred fifty-five million, five hundred fifty-one thousand, three hundred fifty".