7126666217 has 8 divisors (see below), whose sum is σ = 7775157600. Its totient is φ = 6478276960.

The previous prime is 7126666213. The next prime is 7126666223.

7126666217 is nontrivially palindromic in base 10.

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 7126666217 - 2² = 7126666213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7126666213) 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, 245909 + ... + 273357.

It is an arithmetic number, because the mean of its divisors is an integer number (971894700).

Almost surely, 2^7126666217 is an apocalyptic number.

It is an amenable number.

7126666217 is a deficient number, since it is larger than the sum of its proper divisors (648491383).

7126666217 is a wasteful number, since it uses less digits than its factorization.

7126666217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51063.

The product of its digits is 254016, while the sum is 44.

The square root of 7126666217 is about 84419.5843214121. The cubic root of 7126666217 is about 1924.4005524972.

The spelling of 7126666217 in words is "seven billion, one hundred twenty-six million, six hundred sixty-six thousand, two hundred seventeen".