64405275683864 has 16 divisors (see below), whose sum is σ = 121005838741320. Its totient is φ = 32137052019520.

The previous prime is 64405275683851. The next prime is 64405275683923. The reversal of 64405275683864 is 46838657250446.

It is a junction number, because it is equal to n+sod(n) for n = 64405275683794 and 64405275683803.

It is a congruent number.

It is an unprimeable number.

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, 8198223629 + ... + 8198231484.

Almost surely, 2^{64405275683864} is an apocalyptic number.

It is an amenable number.

64405275683864 is a deficient number, since it is larger than the sum of its proper divisors (56600563057456).

64405275683864 is a wasteful number, since it uses less digits than its factorization.

64405275683864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396455610 (or 16396455606 counting only the distinct ones).

The product of its (nonzero) digits is 928972800, while the sum is 68.

The spelling of 64405275683864 in words is "sixty-four trillion, four hundred five billion, two hundred seventy-five million, six hundred eighty-three thousand, eight hundred sixty-four".