645301844133 has 32 divisors (see below), whose sum is σ = 889365937152. Its totient is φ = 415943942400.

The previous prime is 645301844111. The next prime is 645301844167. The reversal of 645301844133 is 331448103546.

It is not a de Polignac number, because 645301844133 - 2⁵ = 645301844101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645301844533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5129718 + ... + 5254008.

It is an arithmetic number, because the mean of its divisors is an integer number (27792685536).

Almost surely, 2^645301844133 is an apocalyptic number.

It is an amenable number.

645301844133 is a deficient number, since it is larger than the sum of its proper divisors (244064093019).

645301844133 is a wasteful number, since it uses less digits than its factorization.

645301844133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124745.

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 645301844133 its reverse (331448103546), we get a palindrome (976749947679).

The spelling of 645301844133 in words is "six hundred forty-five billion, three hundred one million, eight hundred forty-four thousand, one hundred thirty-three".