16426727109 has 24 divisors (see below), whose sum is σ = 25557026040. Its totient is φ = 10107038592.

The previous prime is 16426727099. The next prime is 16426727111. The reversal of 16426727109 is 90172762461.

It can be written as a sum of positive squares in 4 ways, for example, as 10806226209 + 5620500900 = 103953^2 + 74970^2 .

It is not a de Polignac number, because 16426727109 - 2⁹ = 16426726597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16426727189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1235107 + ... + 1248335.

It is an arithmetic number, because the mean of its divisors is an integer number (1064876085).

Almost surely, 2^16426727109 is an apocalyptic number.

It is an amenable number.

16426727109 is a deficient number, since it is larger than the sum of its proper divisors (9130298931).

16426727109 is a wasteful number, since it uses less digits than its factorization.

16426727109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23861 (or 23858 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 16426727109 in words is "sixteen billion, four hundred twenty-six million, seven hundred twenty-seven thousand, one hundred nine".