3621216500 has 48 divisors (see below), whose sum is σ = 8627726016. Its totient is φ = 1316804000.

The previous prime is 3621216499. The next prime is 3621216503. The reversal of 3621216500 is 56121263.

It is a super-2 number, since 2×3621216500² = 26226417879744500000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3621216500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621216503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323702 + ... + 334701.

It is an arithmetic number, because the mean of its divisors is an integer number (179744292).

Almost surely, 2^3621216500 is an apocalyptic number.

It is an amenable number.

3621216500 is an abundant number, since it is smaller than the sum of its proper divisors (5006509516).

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

3621216500 is a wasteful number, since it uses less digits than its factorization.

3621216500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658433 (or 658421 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3621216500 is about 60176.5444338573. The cubic root of 3621216500 is about 1535.6237849267.

Adding to 3621216500 its reverse (56121263), we get a palindrome (3677337763).

The spelling of 3621216500 in words is "three billion, six hundred twenty-one million, two hundred sixteen thousand, five hundred".