16426126665 has 96 divisors (see below), whose sum is σ = 32999200416. Its totient is φ = 7485972480.

The previous prime is 16426126663. The next prime is 16426126667. The reversal of 16426126665 is 56662162461.

16426126665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16426126663) and next prime (16426126667).

It can be written as a sum of positive squares in 16 ways, for example, as 5680938384 + 10745188281 = 75372^2 + 103659^2 .

It is not a de Polignac number, because 16426126665 - 2¹ = 16426126663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16426126665.

It is not an unprimeable number, because it can be changed into a prime (16426126663) 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 95 ways as a sum of consecutive naturals, for example, 593107 + ... + 620183.

It is an arithmetic number, because the mean of its divisors is an integer number (343741671).

Almost surely, 2^16426126665 is an apocalyptic number.

16426126665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16426126665 is an abundant number, since it is smaller than the sum of its proper divisors (16573073751).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16426126665 is a wasteful number, since it uses less digits than its factorization.

16426126665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27179 (or 27176 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 16426126665 in words is "sixteen billion, four hundred twenty-six million, one hundred twenty-six thousand, six hundred sixty-five".