16005660051 has 4 divisors (see below), whose sum is σ = 21340880072. Its totient is φ = 10670440032.

The previous prime is 16005660031. The next prime is 16005660061. The reversal of 16005660051 is 15006650061.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16005660051 - 2²⁵ = 15972105619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16005660031) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2667610006 + ... + 2667610011.

It is an arithmetic number, because the mean of its divisors is an integer number (5335220018).

Almost surely, 2^16005660051 is an apocalyptic number.

16005660051 is a deficient number, since it is larger than the sum of its proper divisors (5335220021).

16005660051 is an equidigital number, since it uses as much as digits as its factorization.

16005660051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335220020.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 16005660051 in words is "sixteen billion, five million, six hundred sixty thousand, fifty-one".