16006726997 has 4 divisors (see below), whose sum is σ = 16007038476. Its totient is φ = 16006415520.

The previous prime is 16006726993. The next prime is 16006726999. The reversal of 16006726997 is 79962760061.

16006726997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6990464881 + 9016262116 = 83609^2 + 94954^2 .

It is a cyclic number.

It is not a de Polignac number, because 16006726997 - 2² = 16006726993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16006726993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58358 + ... + 188199.

It is an arithmetic number, because the mean of its divisors is an integer number (4001759619).

Almost surely, 2^16006726997 is an apocalyptic number.

It is an amenable number.

16006726997 is a deficient number, since it is larger than the sum of its proper divisors (311479).

16006726997 is an equidigital number, since it uses as much as digits as its factorization.

16006726997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311478.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 16006726997 in words is "sixteen billion, six million, seven hundred twenty-six thousand, nine hundred ninety-seven".