169164549840 has 640 divisors, whose sum is σ = 659657779200. Its totient is φ = 35246776320.

The previous prime is 169164549839. The next prime is 169164549847. The reversal of 169164549840 is 48945461961.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169164549847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38470522 + ... + 38474918.

It is an arithmetic number, because the mean of its divisors is an integer number (1030715280).

Almost surely, 2^169164549840 is an apocalyptic number.

169164549840 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 169164549840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329828889600).

169164549840 is an abundant number, since it is smaller than the sum of its proper divisors (490493229360).

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

169164549840 is a wasteful number, since it uses less digits than its factorization.

169164549840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515 (or 4509 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 169164549840 in words is "one hundred sixty-nine billion, one hundred sixty-four million, five hundred forty-nine thousand, eight hundred forty".