66224216610 has 48 divisors (see below), whose sum is σ = 172218234240. Its totient is φ = 17656173600.

The previous prime is 66224216573. The next prime is 66224216627. The reversal of 66224216610 is 1661242266.

66224216610 is a `hidden beast` number, since 6 + 6 + 2 + 24 + 2 + 16 + 610 = 666.

66224216610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381751 + ... + 527429.

It is an arithmetic number, because the mean of its divisors is an integer number (3587879880).

Almost surely, 2^66224216610 is an apocalyptic number.

66224216610 is an abundant number, since it is smaller than the sum of its proper divisors (105994017630).

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

66224216610 is a wasteful number, since it uses less digits than its factorization.

66224216610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150743 (or 150740 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Adding to 66224216610 its reverse (1661242266), we get a palindrome (67885458876).

The spelling of 66224216610 in words is "sixty-six billion, two hundred twenty-four million, two hundred sixteen thousand, six hundred ten".