66224220000 has 120 divisors (see below), whose sum is σ = 217228883256. Its totient is φ = 17659776000.

The previous prime is 66224219983. The next prime is 66224220031. The reversal of 66224220000 is 2242266.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 491869 + ... + 611868.

Almost surely, 2^66224220000 is an apocalyptic number.

66224220000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66224220000 is an abundant number, since it is smaller than the sum of its proper divisors (151004663256).

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

66224220000 is a wasteful number, since it uses less digits than its factorization.

66224220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103770 (or 1103747 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 66224220000 its reverse (2242266), we get a palindrome (66226462266).

The spelling of 66224220000 in words is "sixty-six billion, two hundred twenty-four million, two hundred twenty thousand".