64728571206 has 32 divisors (see below), whose sum is σ = 143912659968. Its totient is φ = 19274015520.

The previous prime is 64728571151. The next prime is 64728571217. The reversal of 64728571206 is 60217582746.

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 15 ways as a sum of consecutive naturals, for example, 13382316 + ... + 13387151.

It is an arithmetic number, because the mean of its divisors is an integer number (4497270624).

Almost surely, 2^64728571206 is an apocalyptic number.

64728571206 is an abundant number, since it is smaller than the sum of its proper divisors (79184088762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64728571206 is a wasteful number, since it uses less digits than its factorization.

64728571206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26769516.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 64728571206 in words is "sixty-four billion, seven hundred twenty-eight million, five hundred seventy-one thousand, two hundred six".