126716380589 has 4 divisors (see below), whose sum is σ = 129807024060. Its totient is φ = 123625737120.

The previous prime is 126716380577. The next prime is 126716380613. The reversal of 126716380589 is 985083617621.

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 60027450025 + 66688930564 = 245005^2 + 258242^2 .

It is a cyclic number.

It is not a de Polignac number, because 126716380589 - 2⁸ = 126716380333 is a prime.

It is a super-2 number, since 2×126716380589² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126716380519) 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, 1545321674 + ... + 1545321755.

It is an arithmetic number, because the mean of its divisors is an integer number (32451756015).

Almost surely, 2^126716380589 is an apocalyptic number.

It is an amenable number.

126716380589 is a deficient number, since it is larger than the sum of its proper divisors (3090643471).

126716380589 is an equidigital number, since it uses as much as digits as its factorization.

126716380589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090643470.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 126716380589 in words is "one hundred twenty-six billion, seven hundred sixteen million, three hundred eighty thousand, five hundred eighty-nine".