11515554660 has 24 divisors (see below), whose sum is σ = 32243553216. Its totient is φ = 3070814560.

The previous prime is 11515554649. The next prime is 11515554683. The reversal of 11515554660 is 6645551511.

11515554660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 95962896 + ... + 95963015.

It is an arithmetic number, because the mean of its divisors is an integer number (1343481384).

Almost surely, 2^11515554660 is an apocalyptic number.

11515554660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11515554660 is an abundant number, since it is smaller than the sum of its proper divisors (20727998556).

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

11515554660 is a wasteful number, since it uses less digits than its factorization.

11515554660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191925923 (or 191925921 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 11515554660 in words is "eleven billion, five hundred fifteen million, five hundred fifty-four thousand, six hundred sixty".