11820555650 has 24 divisors (see below), whose sum is σ = 22038745680. Its totient is φ = 4716929360.

The previous prime is 11820555641. The next prime is 11820555653. The reversal of 11820555650 is 5655502811.

It is not an unprimeable number, because it can be changed into a prime (11820555653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261164 + ... + 303063.

It is an arithmetic number, because the mean of its divisors is an integer number (918281070).

Almost surely, 2^11820555650 is an apocalyptic number.

11820555650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11820555650 is a deficient number, since it is larger than the sum of its proper divisors (10218190030).

11820555650 is a wasteful number, since it uses less digits than its factorization.

11820555650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564658 (or 564653 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 38.

The spelling of 11820555650 in words is "eleven billion, eight hundred twenty million, five hundred fifty-five thousand, six hundred fifty".