6705720516217 has 4 divisors (see below), whose sum is σ = 6729415642000. Its totient is φ = 6682025390436.

The previous prime is 6705720516211. The next prime is 6705720516223. The reversal of 6705720516217 is 7126150275076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6705720516211) and next prime (6705720516223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6705720516217 is a prime.

It is a super-2 number, since 2×6705720516217² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6705720516211) 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, 11847562467 + ... + 11847563032.

It is an arithmetic number, because the mean of its divisors is an integer number (1682353910500).

Almost surely, 2^{6705720516217} is an apocalyptic number.

It is an amenable number.

6705720516217 is a deficient number, since it is larger than the sum of its proper divisors (23695125783).

6705720516217 is a wasteful number, since it uses less digits than its factorization.

6705720516217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23695125782.

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 6705720516217 in words is "six trillion, seven hundred five billion, seven hundred twenty million, five hundred sixteen thousand, two hundred seventeen".