645332301101200 has 60 divisors (see below), whose sum is σ = 1550463711900400. Its totient is φ = 258124119857280.

The previous prime is 645332301101149. The next prime is 645332301101263. The reversal of 645332301101200 is 2101103233546.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15748350 + ... + 39225949.

Almost surely, 2^{645332301101200} is an apocalyptic number.

It is an amenable number.

645332301101200 is an abundant number, since it is smaller than the sum of its proper divisors (905131410799200).

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

645332301101200 is a wasteful number, since it uses less digits than its factorization.

645332301101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55003664 (or 55003653 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 645332301101200 its reverse (2101103233546), we get a palindrome (647433404334746).

The spelling of 645332301101200 in words is "six hundred forty-five trillion, three hundred thirty-two billion, three hundred one million, one hundred one thousand, two hundred".