645224227224 has 16 divisors (see below), whose sum is σ = 1613060568120. Its totient is φ = 215074742400.

The previous prime is 645224227163. The next prime is 645224227243. The reversal of 645224227224 is 422722422546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13442171377 + ... + 13442171424.

Almost surely, 2^645224227224 is an apocalyptic number.

It is an amenable number.

645224227224 is an abundant number, since it is smaller than the sum of its proper divisors (967836340896).

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

645224227224 is a wasteful number, since it uses less digits than its factorization.

645224227224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26884342810 (or 26884342806 counting only the distinct ones).

The product of its digits is 860160, while the sum is 42.

The spelling of 645224227224 in words is "six hundred forty-five billion, two hundred twenty-four million, two hundred twenty-seven thousand, two hundred twenty-four".