11555603660 has 12 divisors (see below), whose sum is σ = 24266767728. Its totient is φ = 4622241456.

The previous prime is 11555603659. The next prime is 11555603671. The reversal of 11555603660 is 6630655511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288890072 + ... + 288890111.

It is an arithmetic number, because the mean of its divisors is an integer number (2022230644).

Almost surely, 2^11555603660 is an apocalyptic number.

11555603660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11555603660 is an abundant number, since it is smaller than the sum of its proper divisors (12711164068).

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

11555603660 is a wasteful number, since it uses less digits than its factorization.

11555603660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577780192 (or 577780190 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 11555603660 in words is "eleven billion, five hundred fifty-five million, six hundred three thousand, six hundred sixty".