64568328105 has 32 divisors (see below), whose sum is σ = 106277681664. Its totient is φ = 33457688576.

The previous prime is 64568328101. The next prime is 64568328107. The reversal of 64568328105 is 50182386546.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64568328105 - 2² = 64568328101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64568328101) 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 31 ways as a sum of consecutive naturals, for example, 237672 + ... + 430841.

It is an arithmetic number, because the mean of its divisors is an integer number (3321177552).

Almost surely, 2^64568328105 is an apocalyptic number.

It is an amenable number.

64568328105 is a deficient number, since it is larger than the sum of its proper divisors (41709353559).

64568328105 is a wasteful number, since it uses less digits than its factorization.

64568328105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668705.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 64568328105 in words is "sixty-four billion, five hundred sixty-eight million, three hundred twenty-eight thousand, one hundred five".