16005061565 has 8 divisors (see below), whose sum is σ = 19208232960. Its totient is φ = 12802609872.

The previous prime is 16005061537. The next prime is 16005061573. The reversal of 16005061565 is 56516050061.

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

It is a cyclic number.

It is not a de Polignac number, because 16005061565 - 2²⁰ = 16004012989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129725 + ... + 220994.

It is an arithmetic number, because the mean of its divisors is an integer number (2401029120).

Almost surely, 2^16005061565 is an apocalyptic number.

It is an amenable number.

16005061565 is a deficient number, since it is larger than the sum of its proper divisors (3203171395).

16005061565 is an equidigital number, since it uses as much as digits as its factorization.

16005061565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359851.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 16005061565 in words is "sixteen billion, five million, sixty-one thousand, five hundred sixty-five".