645412442303124 has 36 divisors (see below), whose sum is σ = 1669400141465056. Its totient is φ = 210134283540048.

The previous prime is 645412442303089. The next prime is 645412442303131. The reversal of 645412442303124 is 421303244214546.

645412442303124 is a `hidden beast` number, since 6 + 4 + 54 + 1 + 2 + 442 + 30 + 3 + 124 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 645412442303124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208466549584 + ... + 208466552679.

Almost surely, 2^{645412442303124} is an apocalyptic number.

It is an amenable number.

645412442303124 is an abundant number, since it is smaller than the sum of its proper divisors (1023987699161932).

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

645412442303124 is a wasteful number, since it uses less digits than its factorization.

645412442303124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416933102316 (or 416933102311 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 645412442303124 in words is "six hundred forty-five trillion, four hundred twelve billion, four hundred forty-two million, three hundred three thousand, one hundred twenty-four".