169944169494 has 64 divisors (see below), whose sum is σ = 382444208640. Its totient is φ = 49891173120.

The previous prime is 169944169427. The next prime is 169944169517. The reversal of 169944169494 is 494961449961.

169944169494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (66).

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 31 ways as a sum of consecutive naturals, for example, 419647 + ... + 718325.

It is an arithmetic number, because the mean of its divisors is an integer number (5975690760).

Almost surely, 2^169944169494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169944169494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191222104320).

169944169494 is an abundant number, since it is smaller than the sum of its proper divisors (212500039146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169944169494 is a wasteful number, since it uses less digits than its factorization.

169944169494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298965.

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

The spelling of 169944169494 in words is "one hundred sixty-nine billion, nine hundred forty-four million, one hundred sixty-nine thousand, four hundred ninety-four".