164703880805 has 16 divisors (see below), whose sum is σ = 198125578800. Its totient is φ = 131442634752.

The previous prime is 164703880801. The next prime is 164703880811. The reversal of 164703880805 is 508088307461.

164703880805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 60473695396 + 104230185409 = 245914^2 + 322847^2 .

It is a cyclic number.

It is not a de Polignac number, because 164703880805 - 2² = 164703880801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164703880801) 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 15 ways as a sum of consecutive naturals, for example, 14730377 + ... + 14741553.

It is an arithmetic number, because the mean of its divisors is an integer number (12382848675).

Almost surely, 2^164703880805 is an apocalyptic number.

It is an amenable number.

164703880805 is a deficient number, since it is larger than the sum of its proper divisors (33421697995).

164703880805 is a wasteful number, since it uses less digits than its factorization.

164703880805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18088.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 164703880805 in words is "one hundred sixty-four billion, seven hundred three million, eight hundred eighty thousand, eight hundred five".