645425514343 has 4 divisors (see below), whose sum is σ = 645428544520. Its totient is φ = 645422484168.

The previous prime is 645425514341. The next prime is 645425514353. The reversal of 645425514343 is 343415524546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 645425514343 - 2¹ = 645425514341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645425514293 and 645425514302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645425514341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169280 + ... + 1630357.

It is an arithmetic number, because the mean of its divisors is an integer number (161357136130).

Almost surely, 2^645425514343 is an apocalyptic number.

645425514343 is a deficient number, since it is larger than the sum of its proper divisors (3030177).

645425514343 is a wasteful number, since it uses less digits than its factorization.

645425514343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030176.

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

The spelling of 645425514343 in words is "six hundred forty-five billion, four hundred twenty-five million, five hundred fourteen thousand, three hundred forty-three".