645452335112 has 32 divisors (see below), whose sum is σ = 1306947700800. Its totient is φ = 297071252544.

The previous prime is 645452335109. The next prime is 645452335147. The reversal of 645452335112 is 211533254546.

It is a self number, because there is not a number n which added to its sum of digits gives 645452335112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8606498 + ... + 8681169.

It is an arithmetic number, because the mean of its divisors is an integer number (40842115650).

Almost surely, 2^645452335112 is an apocalyptic number.

It is an amenable number.

645452335112 is an abundant number, since it is smaller than the sum of its proper divisors (661495365688).

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

645452335112 is a wasteful number, since it uses less digits than its factorization.

645452335112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288045 (or 17288041 counting only the distinct ones).

The product of its digits is 432000, while the sum is 41.

Adding to 645452335112 its reverse (211533254546), we get a palindrome (856985589658).

The spelling of 645452335112 in words is "six hundred forty-five billion, four hundred fifty-two million, three hundred thirty-five thousand, one hundred twelve".