166834185101 has 4 divisors (see below), whose sum is σ = 169569171804. Its totient is φ = 164099198400.

The previous prime is 166834185079. The next prime is 166834185139. The reversal of 166834185101 is 101581438661.

166834185101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101581438661 = 73 ⋅1391526557.

It can be written as a sum of positive squares in 2 ways, for example, as 1449629476 + 165384555625 = 38074^2 + 406675^2 .

It is a cyclic number.

It is not a de Polignac number, because 166834185101 - 2¹⁴ = 166834168717 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 (166834085101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367493260 + ... + 1367493381.

It is an arithmetic number, because the mean of its divisors is an integer number (42392292951).

Almost surely, 2^166834185101 is an apocalyptic number.

It is an amenable number.

166834185101 is a deficient number, since it is larger than the sum of its proper divisors (2734986703).

166834185101 is an equidigital number, since it uses as much as digits as its factorization.

166834185101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734986702.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 166834185101 in words is "one hundred sixty-six billion, eight hundred thirty-four million, one hundred eighty-five thousand, one hundred one".