2216555556 has 12 divisors (see below), whose sum is σ = 5171962992. Its totient is φ = 738851848.

The previous prime is 2216555531. The next prime is 2216555581. The reversal of 2216555556 is 6555556122.

It is an interprime number because it is at equal distance from previous prime (2216555531) and next prime (2216555581).

It is a tau number, because it is divible by the number of its divisors (12).

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, 92356470 + ... + 92356493.

It is an arithmetic number, because the mean of its divisors is an integer number (430996916).

Almost surely, 2^2216555556 is an apocalyptic number.

It is an amenable number.

2216555556 is an abundant number, since it is smaller than the sum of its proper divisors (2955407436).

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

2216555556 is a wasteful number, since it uses less digits than its factorization.

2216555556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184712970 (or 184712968 counting only the distinct ones).

The product of its digits is 450000, while the sum is 42.

The square root of 2216555556 is about 47080.3096421423. The cubic root of 2216555556 is about 1303.8457238099.

The spelling of 2216555556 in words is "two billion, two hundred sixteen million, five hundred fifty-five thousand, five hundred fifty-six".