169944449961 has 64 divisors (see below), whose sum is σ = 274950144000. Its totient is φ = 91954656000.

The previous prime is 169944449959. The next prime is 169944449977.

169944449961 is nontrivially palindromic in base 10.

169944449961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169944449961 - 2¹ = 169944449959 is a prime.

It is a super-2 number, since 2×169944449961² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 169944449892 and 169944449901.

It is not an unprimeable number, because it can be changed into a prime (169944449761) 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 63 ways as a sum of consecutive naturals, for example, 39881571 + ... + 39885831.

It is an arithmetic number, because the mean of its divisors is an integer number (4296096000).

Almost surely, 2^169944449961 is an apocalyptic number.

169944449961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

169944449961 is a deficient number, since it is larger than the sum of its proper divisors (105005694039).

169944449961 is a wasteful number, since it uses less digits than its factorization.

169944449961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318.

The product of its digits is 60466176, while the sum is 66.

The spelling of 169944449961 in words is "one hundred sixty-nine billion, nine hundred forty-four million, four hundred forty-nine thousand, nine hundred sixty-one".