6705722165671 has 4 divisors (see below), whose sum is σ = 6705852054912. Its totient is φ = 6705592276432.

The previous prime is 6705722165609. The next prime is 6705722165713. The reversal of 6705722165671 is 1765612275076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6705722165671 - 2⁷ = 6705722165543 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 (6705722165071) 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, 64867150 + ... + 64970443.

It is an arithmetic number, because the mean of its divisors is an integer number (1676463013728).

Almost surely, 2^{6705722165671} is an apocalyptic number.

6705722165671 is a deficient number, since it is larger than the sum of its proper divisors (129889241).

6705722165671 is a wasteful number, since it uses less digits than its factorization.

6705722165671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129889240.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 6705722165671 in words is "six trillion, seven hundred five billion, seven hundred twenty-two million, one hundred sixty-five thousand, six hundred seventy-one".