11505506110506 has 48 divisors (see below), whose sum is σ = 24962044199040. Its totient is φ = 3830024103840.

The previous prime is 11505506110487. The next prime is 11505506110583. The reversal of 11505506110506 is 60501160550511.

It is a happy number.

11505506110506 is a `hidden beast` number, since 1 + 1 + 50 + 550 + 6 + 1 + 1 + 0 + 50 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128377771 + ... + 128467361.

It is an arithmetic number, because the mean of its divisors is an integer number (520042587480).

Almost surely, 2^{11505506110506} is an apocalyptic number.

11505506110506 is an abundant number, since it is smaller than the sum of its proper divisors (13456538088534).

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

11505506110506 is a wasteful number, since it uses less digits than its factorization.

11505506110506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99091 (or 99088 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 11505506110506 in words is "eleven trillion, five hundred five billion, five hundred six million, one hundred ten thousand, five hundred six".