2126731717 has 8 divisors (see below), whose sum is σ = 2369434752. Its totient is φ = 1892256000.

The previous prime is 2126731709. The next prime is 2126731721. The reversal of 2126731717 is 7171376212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2126731717 - 2³ = 2126731709 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 (2126732717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056284 + ... + 2057317.

It is an arithmetic number, because the mean of its divisors is an integer number (296179344).

Almost surely, 2^2126731717 is an apocalyptic number.

It is an amenable number.

2126731717 is a deficient number, since it is larger than the sum of its proper divisors (242703035).

2126731717 is a wasteful number, since it uses less digits than its factorization.

2126731717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113659.

The product of its digits is 24696, while the sum is 37.

The square root of 2126731717 is about 46116.5015693949. The cubic root of 2126731717 is about 1285.9899343912.

The spelling of 2126731717 in words is "two billion, one hundred twenty-six million, seven hundred thirty-one thousand, seven hundred seventeen".