64673574166 has 16 divisors (see below), whose sum is σ = 99671680080. Its totient is φ = 31460981760.

The previous prime is 64673574131. The next prime is 64673574179. The reversal of 64673574166 is 66147537646.

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 7 ways as a sum of consecutive naturals, for example, 2813715 + ... + 2836606.

It is an arithmetic number, because the mean of its divisors is an integer number (6229480005).

Almost surely, 2^64673574166 is an apocalyptic number.

64673574166 is a deficient number, since it is larger than the sum of its proper divisors (34998105914).

64673574166 is a wasteful number, since it uses less digits than its factorization.

64673574166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650479.

The product of its digits is 15240960, while the sum is 55.

The spelling of 64673574166 in words is "sixty-four billion, six hundred seventy-three million, five hundred seventy-four thousand, one hundred sixty-six".