166841836813 has 16 divisors (see below), whose sum is σ = 172954869696. Its totient is φ = 160837695360.

The previous prime is 166841836807. The next prime is 166841836841. The reversal of 166841836813 is 318638148661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166841836813 is a prime.

It is a super-2 number, since 2×166841836813² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166841836853) 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, 1084006 + ... + 1228312.

It is an arithmetic number, because the mean of its divisors is an integer number (10809679356).

Almost surely, 2^166841836813 is an apocalyptic number.

It is an amenable number.

166841836813 is a deficient number, since it is larger than the sum of its proper divisors (6113032883).

166841836813 is a wasteful number, since it uses less digits than its factorization.

166841836813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144684.

The product of its digits is 3981312, while the sum is 55.

The spelling of 166841836813 in words is "one hundred sixty-six billion, eight hundred forty-one million, eight hundred thirty-six thousand, eight hundred thirteen".