16564116272641 has 8 divisors (see below), whose sum is σ = 19079477012480. Its totient is φ = 14086020136608.

The previous prime is 16564116272633. The next prime is 16564116272659. The reversal of 16564116272641 is 14627261146561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16564116272641 - 2³ = 16564116272633 is a prime.

It is a super-2 number, since 2×16564116272641² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564116272621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9316149996 + ... + 9316151773.

It is an arithmetic number, because the mean of its divisors is an integer number (2384934626560).

Almost surely, 2^{16564116272641} is an apocalyptic number.

It is an amenable number.

16564116272641 is a deficient number, since it is larger than the sum of its proper divisors (2515360739839).

16564116272641 is a wasteful number, since it uses less digits than its factorization.

16564116272641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18632301903.

The product of its digits is 2903040, while the sum is 52.

The spelling of 16564116272641 in words is "sixteen trillion, five hundred sixty-four billion, one hundred sixteen million, two hundred seventy-two thousand, six hundred forty-one".