64673574165 has 24 divisors (see below), whose sum is σ = 112664198400. Its totient is φ = 34319238624.

The previous prime is 64673574131. The next prime is 64673574179. The reversal of 64673574165 is 56147537646.

64673574165 is a `hidden beast` number, since 6 + 4 + 6 + 7 + 3 + 574 + 1 + 65 = 666.

It is not a de Polignac number, because 64673574165 - 2¹² = 64673570069 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 3602077 + ... + 3619986.

It is an arithmetic number, because the mean of its divisors is an integer number (4694341600).

Almost surely, 2^64673574165 is an apocalyptic number.

It is an amenable number.

64673574165 is a deficient number, since it is larger than the sum of its proper divisors (47990624235).

64673574165 is a wasteful number, since it uses less digits than its factorization.

64673574165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222273 (or 7222270 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 64673574165 in words is "sixty-four billion, six hundred seventy-three million, five hundred seventy-four thousand, one hundred sixty-five".