16001551000565 has 16 divisors (see below), whose sum is σ = 20684699148288. Its totient is φ = 11813231854656.

The previous prime is 16001551000543. The next prime is 16001551000637. The reversal of 16001551000565 is 56500015510061.

It is a cyclic number.

It is not a de Polignac number, because 16001551000565 - 2³⁴ = 15984371131381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34120679 + ... + 34586468.

It is an arithmetic number, because the mean of its divisors is an integer number (1292793696768).

Almost surely, 2^{16001551000565} is an apocalyptic number.

It is an amenable number.

16001551000565 is a deficient number, since it is larger than the sum of its proper divisors (4683148147723).

16001551000565 is a wasteful number, since it uses less digits than its factorization.

16001551000565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68710748.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 16001551000565 in words is "sixteen trillion, one billion, five hundred fifty-one million, five hundred sixty-five", and thus it is an aban number.