169936386973 has 4 divisors (see below), whose sum is σ = 178880407360. Its totient is φ = 160992366588.

The previous prime is 169936386947. The next prime is 169936387001. The reversal of 169936386973 is 379683639961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379683639961 = 29 ⋅13092539309.

It is not a de Polignac number, because 169936386973 - 2⁵ = 169936386941 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 (169936386073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4472010165 + ... + 4472010202.

It is an arithmetic number, because the mean of its divisors is an integer number (44720101840).

Almost surely, 2^169936386973 is an apocalyptic number.

It is an amenable number.

169936386973 is a deficient number, since it is larger than the sum of its proper divisors (8944020387).

169936386973 is an equidigital number, since it uses as much as digits as its factorization.

169936386973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8944020386.

The product of its digits is 238085568, while the sum is 70.

The spelling of 169936386973 in words is "one hundred sixty-nine billion, nine hundred thirty-six million, three hundred eighty-six thousand, nine hundred seventy-three".