11648818820 has 24 divisors (see below), whose sum is σ = 24586703064. Its totient is φ = 4635873536.

The previous prime is 11648818807. The next prime is 11648818847. The reversal of 11648818820 is 2881884611.

11648818820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8059371076 + 3589447744 = 89774^2 + 59912^2 .

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 7 ways as a sum of consecutive naturals, for example, 1474337 + ... + 1482216.

It is an arithmetic number, because the mean of its divisors is an integer number (1024445961).

Almost surely, 2^11648818820 is an apocalyptic number.

11648818820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11648818820 is an abundant number, since it is smaller than the sum of its proper divisors (12937884244).

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

11648818820 is a wasteful number, since it uses less digits than its factorization.

11648818820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956759 (or 2956757 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 47.

The spelling of 11648818820 in words is "eleven billion, six hundred forty-eight million, eight hundred eighteen thousand, eight hundred twenty".