64105456678 has 8 divisors (see below), whose sum is σ = 96160096080. Its totient is φ = 32052091320.

The previous prime is 64105456603. The next prime is 64105456699. The reversal of 64105456678 is 87665450146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180813 + ... + 401128.

It is an arithmetic number, because the mean of its divisors is an integer number (12020012010).

Almost surely, 2^64105456678 is an apocalyptic number.

64105456678 is a deficient number, since it is larger than the sum of its proper divisors (32054639402).

64105456678 is a wasteful number, since it uses less digits than its factorization.

64105456678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637022.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 64105456678 in words is "sixty-four billion, one hundred five million, four hundred fifty-six thousand, six hundred seventy-eight".