4312689726809 has 4 divisors (see below), whose sum is σ = 4344169214004. Its totient is φ = 4281210239616.

The previous prime is 4312689726803. The next prime is 4312689726817. The reversal of 4312689726809 is 9086279862134.

4312689726809 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 2966672094409 + 1346017632400 = 1722403^2 + 1160180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4312689726809 - 2¹² = 4312689722713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4312689726803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15739743392 + ... + 15739743665.

It is an arithmetic number, because the mean of its divisors is an integer number (1086042303501).

Almost surely, 2^{4312689726809} is an apocalyptic number.

It is an amenable number.

4312689726809 is a deficient number, since it is larger than the sum of its proper divisors (31479487195).

4312689726809 is a wasteful number, since it uses less digits than its factorization.

4312689726809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31479487194.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 4312689726809 in words is "four trillion, three hundred twelve billion, six hundred eighty-nine million, seven hundred twenty-six thousand, eight hundred nine".