2216556500 has 48 divisors (see below), whose sum is σ = 4899375936. Its totient is φ = 875924000.

The previous prime is 2216556499. The next prime is 2216556523. The reversal of 2216556500 is 56556122.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 14795 + ... + 68205.

It is an arithmetic number, because the mean of its divisors is an integer number (102070332).

Almost surely, 2^2216556500 is an apocalyptic number.

2216556500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2216556500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449687968).

2216556500 is an abundant number, since it is smaller than the sum of its proper divisors (2682819436).

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

2216556500 is a wasteful number, since it uses less digits than its factorization.

2216556500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53513 (or 53501 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2216556500 is about 47080.3196675639. The cubic root of 2216556500 is about 1303.8459089064.

The spelling of 2216556500 in words is "two billion, two hundred sixteen million, five hundred fifty-six thousand, five hundred".