646103642264 has 16 divisors (see below), whose sum is σ = 1275204557400. Its totient is φ = 306049093632.

The previous prime is 646103642263. The next prime is 646103642267. The reversal of 646103642264 is 462246301646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646103642263) 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 3 ways as a sum of consecutive naturals, for example, 2125340777 + ... + 2125341080.

Almost surely, 2^646103642264 is an apocalyptic number.

It is an amenable number.

646103642264 is a deficient number, since it is larger than the sum of its proper divisors (629100915136).

646103642264 is a wasteful number, since it uses less digits than its factorization.

646103642264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250681882 (or 4250681878 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 646103642264 in words is "six hundred forty-six billion, one hundred three million, six hundred forty-two thousand, two hundred sixty-four".