645302313145 has 48 divisors (see below), whose sum is σ = 900540426240. Its totient is φ = 434848055040.

The previous prime is 645302313143. The next prime is 645302313191. The reversal of 645302313145 is 541313203546.

645302313145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 645302313145 - 2¹ = 645302313143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645302313143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288208936 + ... + 288211174.

It is an arithmetic number, because the mean of its divisors is an integer number (18761258880).

Almost surely, 2^645302313145 is an apocalyptic number.

It is an amenable number.

645302313145 is a deficient number, since it is larger than the sum of its proper divisors (255238113095).

645302313145 is a wasteful number, since it uses less digits than its factorization.

645302313145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586 (or 4525 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 645302313145 in words is "six hundred forty-five billion, three hundred two million, three hundred thirteen thousand, one hundred forty-five".