645233255032 has 32 divisors (see below), whose sum is σ = 1268395966080. Its totient is φ = 307127288160.

The previous prime is 645233255011. The next prime is 645233255033. The reversal of 645233255032 is 230552332546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645233255033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8270898 + ... + 8348545.

It is an arithmetic number, because the mean of its divisors is an integer number (39637373940).

Almost surely, 2^645233255032 is an apocalyptic number.

It is an amenable number.

645233255032 is a deficient number, since it is larger than the sum of its proper divisors (623162711048).

645233255032 is a wasteful number, since it uses less digits than its factorization.

645233255032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16619683 (or 16619679 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 645233255032 its reverse (230552332546), we get a palindrome (875785587578).

The spelling of 645233255032 in words is "six hundred forty-five billion, two hundred thirty-three million, two hundred fifty-five thousand, thirty-two".