645622045003 has 12 divisors (see below), whose sum is σ = 700213576368. Its totient is φ = 595014245280.

The previous prime is 645622044997. The next prime is 645622045039. The reversal of 645622045003 is 300540226546.

It is not a de Polignac number, because 645622045003 - 2¹³ = 645622036811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (645622045303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2920500 + ... + 3133777.

It is an arithmetic number, because the mean of its divisors is an integer number (58351131364).

Almost surely, 2^645622045003 is an apocalyptic number.

645622045003 is a deficient number, since it is larger than the sum of its proper divisors (54591531365).

645622045003 is a wasteful number, since it uses less digits than its factorization.

645622045003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054934 (or 6054921 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 645622045003 in words is "six hundred forty-five billion, six hundred twenty-two million, forty-five thousand, three".