16564573000505 has 32 divisors (see below), whose sum is σ = 20394281875968. Its totient is φ = 12909773260800.

The previous prime is 16564573000463. The next prime is 16564573000511. The reversal of 16564573000505 is 50500037546561.

It is not a de Polignac number, because 16564573000505 - 2¹⁶ = 16564572934969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16564573000505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170841890 + ... + 170938820.

It is an arithmetic number, because the mean of its divisors is an integer number (637321308624).

Almost surely, 2^{16564573000505} is an apocalyptic number.

It is an amenable number.

16564573000505 is a deficient number, since it is larger than the sum of its proper divisors (3829708875463).

16564573000505 is a wasteful number, since it uses less digits than its factorization.

16564573000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100337.

The product of its (nonzero) digits is 1890000, while the sum is 47.

The spelling of 16564573000505 in words is "sixteen trillion, five hundred sixty-four billion, five hundred seventy-three million, five hundred five", and thus it is an aban number.