16001065556065 has 24 divisors (see below), whose sum is σ = 19827786992832. Its totient is φ = 12395854457280.

The previous prime is 16001065556011. The next prime is 16001065556291. The reversal of 16001065556065 is 56065556010061.

It is not a de Polignac number, because 16001065556065 - 2²⁹ = 16000528685153 is a prime.

It is a Duffinian 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, 4095109 + ... + 6983698.

It is an arithmetic number, because the mean of its divisors is an integer number (826157791368).

Almost surely, 2^{16001065556065} is an apocalyptic number.

It is an amenable number.

16001065556065 is a deficient number, since it is larger than the sum of its proper divisors (3826721436767).

16001065556065 is a wasteful number, since it uses less digits than its factorization.

16001065556065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11079097 (or 11079060 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 16001065556065 in words is "sixteen trillion, one billion, sixty-five million, five hundred fifty-six thousand, sixty-five".