11011105506 has 8 divisors (see below), whose sum is σ = 22022211024. Its totient is φ = 3670368500.

The previous prime is 11011105499. The next prime is 11011105519. The reversal of 11011105506 is 60550111011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

11011105506 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917592120 + ... + 917592131.

It is an arithmetic number, because the mean of its divisors is an integer number (2752776378).

Almost surely, 2^11011105506 is an apocalyptic number.

11011105506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11011105506 is a wasteful number, since it uses less digits than its factorization.

11011105506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835184256.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 11011105506 its reverse (60550111011), we get a palindrome (71561216517).

The spelling of 11011105506 in words is "eleven billion, eleven million, one hundred five thousand, five hundred six".