64243363863 has 32 divisors (see below), whose sum is σ = 103103101440. Its totient is φ = 34759428480.

The previous prime is 64243363829. The next prime is 64243363871. The reversal of 64243363863 is 36836334246.

It is not a de Polignac number, because 64243363863 - 2¹⁰ = 64243362839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64243363883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706033 + ... + 791813.

It is an arithmetic number, because the mean of its divisors is an integer number (3221971920).

Almost surely, 2^64243363863 is an apocalyptic number.

64243363863 is a deficient number, since it is larger than the sum of its proper divisors (38859737577).

64243363863 is a wasteful number, since it uses less digits than its factorization.

64243363863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87687.

The product of its digits is 4478976, while the sum is 48.

The spelling of 64243363863 in words is "sixty-four billion, two hundred forty-three million, three hundred sixty-three thousand, eight hundred sixty-three".