12017555216 has 10 divisors (see below), whose sum is σ = 23284013262. Its totient is φ = 6008777600.

The previous prime is 12017555189. The next prime is 12017555257. The reversal of 12017555216 is 61255571021.

It can be written as a sum of positive squares in only one way, i.e., 7328044816 + 4689510400 = 85604^2 + 68480^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 375548585 + ... + 375548616.

Almost surely, 2^12017555216 is an apocalyptic number.

12017555216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12017555216 is a deficient number, since it is larger than the sum of its proper divisors (11266458046).

12017555216 is an equidigital number, since it uses as much as digits as its factorization.

12017555216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751097209 (or 751097203 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 12017555216 in words is "twelve billion, seventeen million, five hundred fifty-five thousand, two hundred sixteen".