16700171226705 has 12 divisors (see below), whose sum is σ = 28946963459700. Its totient is φ = 8906757987552.

The previous prime is 16700171226623. The next prime is 16700171226727. The reversal of 16700171226705 is 50762217100761.

It can be written as a sum of positive squares in 2 ways, for example, as 8330589148176 + 8369582078529 = 2886276^2 + 2893023^2 .

It is not a de Polignac number, because 16700171226705 - 2²⁰ = 16700170178129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 371114916149 = 16700171226705 / (1 + 6 + 7 + 0 + 0 + 1 + 7 + 1 + 2 + 2 + 6 + 7 + 0 + 5).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185557458030 + ... + 185557458119.

It is an arithmetic number, because the mean of its divisors is an integer number (2412246954975).

Almost surely, 2^{16700171226705} is an apocalyptic number.

16700171226705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16700171226705 is a deficient number, since it is larger than the sum of its proper divisors (12246792232995).

16700171226705 is a wasteful number, since it uses less digits than its factorization.

16700171226705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371114916160 (or 371114916157 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 16700171226705 in words is "sixteen trillion, seven hundred billion, one hundred seventy-one million, two hundred twenty-six thousand, seven hundred five".