169041686480 has 80 divisors (see below), whose sum is σ = 395912197200. Its totient is φ = 67120275456.

The previous prime is 169041686467. The next prime is 169041686507. The reversal of 169041686480 is 84686140961.

It can be written as a sum of positive squares in 8 ways, for example, as 21812926864 + 147228759616 = 147692^2 + 383704^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×169041686480² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14023496 + ... + 14035544.

It is an arithmetic number, because the mean of its divisors is an integer number (4948902465).

Almost surely, 2^169041686480 is an apocalyptic number.

169041686480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169041686480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197956098600).

169041686480 is an abundant number, since it is smaller than the sum of its proper divisors (226870510720).

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

169041686480 is a wasteful number, since it uses less digits than its factorization.

169041686480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336 (or 13330 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 169041686480 in words is "one hundred sixty-nine billion, forty-one million, six hundred eighty-six thousand, four hundred eighty".