645213104533360 has 80 divisors (see below), whose sum is σ = 1637504618612832. Its totient is φ = 234478206950400.

The previous prime is 645213104533343. The next prime is 645213104533423. The reversal of 645213104533360 is 63335401312546.

645213104533360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 645213104533360.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224729199 + ... + 227582158.

Almost surely, 2^{645213104533360} is an apocalyptic number.

It is an amenable number.

645213104533360 is an abundant number, since it is smaller than the sum of its proper divisors (992291514079472).

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

645213104533360 is a wasteful number, since it uses less digits than its factorization.

645213104533360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452313002 (or 452312996 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 645213104533360 in words is "six hundred forty-five trillion, two hundred thirteen billion, one hundred four million, five hundred thirty-three thousand, three hundred sixty".