645565222234 has 16 divisors (see below), whose sum is σ = 972441145440. Its totient is φ = 321421038640.

The previous prime is 645565222177. The next prime is 645565222261. The reversal of 645565222234 is 432222565546.

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, 264772 + ... + 1166719.

It is an arithmetic number, because the mean of its divisors is an integer number (60777571590).

Almost surely, 2^645565222234 is an apocalyptic number.

645565222234 is a deficient number, since it is larger than the sum of its proper divisors (326875923206).

645565222234 is a wasteful number, since it uses less digits than its factorization.

645565222234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432445.

The product of its digits is 3456000, while the sum is 46.

The spelling of 645565222234 in words is "six hundred forty-five billion, five hundred sixty-five million, two hundred twenty-two thousand, two hundred thirty-four".