11661648724 has 48 divisors (see below), whose sum is σ = 22709756160. Its totient is φ = 5194650240.

The previous prime is 11661648721. The next prime is 11661648811. The reversal of 11661648724 is 42784616611.

11661648724 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 not an unprimeable number, because it can be changed into a prime (11661648721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2420542 + ... + 2425354.

It is an arithmetic number, because the mean of its divisors is an integer number (473119920).

Almost surely, 2^11661648724 is an apocalyptic number.

It is an amenable number.

11661648724 is a deficient number, since it is larger than the sum of its proper divisors (11048107436).

11661648724 is a wasteful number, since it uses less digits than its factorization.

11661648724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920 (or 5918 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The spelling of 11661648724 in words is "eleven billion, six hundred sixty-one million, six hundred forty-eight thousand, seven hundred twenty-four".