169116942223009 has 27 divisors (see below), whose sum is σ = 186382481961459. Its totient is φ = 153335503947120.

The previous prime is 169116942223001. The next prime is 169116942223027. The reversal of 169116942223009 is 900322249611961.

The square root of 169116942223009 is 13004497.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 69389316500625 + 99727625722384 = 8330025^2 + 9986372^2 .

It is not a de Polignac number, because 169116942223009 - 2³ = 169116942223001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169116942223001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 62798714667 + ... + 62798717359.

Almost surely, 2^{169116942223009} is an apocalyptic number.

169116942223009 is the 13004497-th square number.

169116942223009 is the 6502249-th centered octagonal number.

It is an amenable number.

169116942223009 is a deficient number, since it is larger than the sum of its proper divisors (17265539738450).

169116942223009 is an frugal number, since it uses more digits than its factorization.

169116942223009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286 (or 3143 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 169116942223009 in words is "one hundred sixty-nine trillion, one hundred sixteen billion, nine hundred forty-two million, two hundred twenty-three thousand, nine".