645122323133 has 8 divisors (see below), whose sum is σ = 683241406848. Its totient is φ = 607022207424.

The previous prime is 645122323123. The next prime is 645122323159. The reversal of 645122323133 is 331323221546.

645122323133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 645122323133 - 2⁸ = 645122322877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645122323093 and 645122323102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645122323123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4671941 + ... + 4808042.

It is an arithmetic number, because the mean of its divisors is an integer number (85405175856).

Almost surely, 2^645122323133 is an apocalyptic number.

It is an amenable number.

645122323133 is a deficient number, since it is larger than the sum of its proper divisors (38119083715).

645122323133 is a wasteful number, since it uses less digits than its factorization.

645122323133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484003.

The product of its digits is 77760, while the sum is 35.

Adding to 645122323133 its reverse (331323221546), we get a palindrome (976445544679).

The spelling of 645122323133 in words is "six hundred forty-five billion, one hundred twenty-two million, three hundred twenty-three thousand, one hundred thirty-three".