669448352563200 has 2484 divisors, whose sum is σ = 2885795698361472. Its totient is φ = 147763652198400.

The previous prime is 669448352563181. The next prime is 669448352563217. The reversal of 669448352563200 is 2365253844966.

669448352563200 is a `hidden beast` number, since 6 + 6 + 9 + 4 + 4 + 83 + 525 + 6 + 3 + 20 + 0 = 666.

It is a super-2 number, since 2×669448352563200² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1433508249367 + ... + 1433508249833.

Almost surely, 2^{669448352563200} is an apocalyptic number.

669448352563200 is a gapful number since it is divisible by the number (60) 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 669448352563200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1442897849180736).

669448352563200 is an abundant number, since it is smaller than the sum of its proper divisors (2216347345798272).

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

669448352563200 is an frugal number, since it uses more digits than its factorization.

669448352563200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 63.

The spelling of 669448352563200 in words is "six hundred sixty-nine trillion, four hundred forty-eight billion, three hundred fifty-two million, five hundred sixty-three thousand, two hundred".