169989120000 has 1680 divisors, whose sum is σ = 766479048192. Its totient is φ = 35389440000.

The previous prime is 169989119959. The next prime is 169989120001. The reversal of 169989120000 is 21989961.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (169989120001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5483519985 + ... + 5483520015.

Almost surely, 2^169989120000 is an apocalyptic number.

169989120000 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 169989120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383239524096).

169989120000 is an abundant number, since it is smaller than the sum of its proper divisors (596489928192).

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

169989120000 is an equidigital number, since it uses as much as digits as its factorization.

169989120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 169989120000 in words is "one hundred sixty-nine billion, nine hundred eighty-nine million, one hundred twenty thousand".