161170215005 has 16 divisors (see below), whose sum is σ = 208317933120. Its totient is φ = 119309355648.

The previous prime is 161170214993. The next prime is 161170215139. The reversal of 161170215005 is 500512071161.

161170215005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161170215005 - 2¹⁴ = 161170198621 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 19722992 + ... + 19731161.

It is an arithmetic number, because the mean of its divisors is an integer number (13019870820).

Almost surely, 2^161170215005 is an apocalyptic number.

It is an amenable number.

161170215005 is a deficient number, since it is larger than the sum of its proper divisors (47147718115).

161170215005 is a wasteful number, since it uses less digits than its factorization.

161170215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39454220.

The product of its (nonzero) digits is 2100, while the sum is 29.

Adding to 161170215005 its reverse (500512071161), we get a palindrome (661682286166).

The spelling of 161170215005 in words is "one hundred sixty-one billion, one hundred seventy million, two hundred fifteen thousand, five".