66224441503200 has 144 divisors (see below), whose sum is σ = 215563364780400. Its totient is φ = 17659621048320.

The previous prime is 66224441503169. The next prime is 66224441503271. The reversal of 66224441503200 is 230514442266.

It is a happy number.

It is a super-2 number, since 2×66224441503200² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 266633472 + ... + 266881728.

It is an arithmetic number, because the mean of its divisors is an integer number (1496967810975).

Almost surely, 2^{66224441503200} is an apocalyptic number.

66224441503200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66224441503200 is an abundant number, since it is smaller than the sum of its proper divisors (149338923277200).

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

66224441503200 is a wasteful number, since it uses less digits than its factorization.

66224441503200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359429 (or 359416 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 66224441503200 its reverse (230514442266), we get a palindrome (66454955945466).

The spelling of 66224441503200 in words is "sixty-six trillion, two hundred twenty-four billion, four hundred forty-one million, five hundred three thousand, two hundred".