166851683351 has 16 divisors (see below), whose sum is σ = 177049333440. Its totient is φ = 156696967680.

The previous prime is 166851683333. The next prime is 166851683353. The reversal of 166851683351 is 153386158661.

It is a cyclic number.

It is not a de Polignac number, because 166851683351 - 2³⁴ = 149671814167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166851683293 and 166851683302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166851683353) 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 15 ways as a sum of consecutive naturals, for example, 15993605 + ... + 16004033.

It is an arithmetic number, because the mean of its divisors is an integer number (11065583340).

Almost surely, 2^166851683351 is an apocalyptic number.

166851683351 is a deficient number, since it is larger than the sum of its proper divisors (10197650089).

166851683351 is a wasteful number, since it uses less digits than its factorization.

166851683351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12394.

The product of its digits is 3110400, while the sum is 53.

The spelling of 166851683351 in words is "one hundred sixty-six billion, eight hundred fifty-one million, six hundred eighty-three thousand, three hundred fifty-one".