169013224128 has 336 divisors, whose sum is σ = 549498706944. Its totient is φ = 45641594880.

The previous prime is 169013224117. The next prime is 169013224129. The reversal of 169013224128 is 821422310961.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×169013224128² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169013224129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12534126 + ... + 12547602.

Almost surely, 2^169013224128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169013224128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274749353472).

169013224128 is an abundant number, since it is smaller than the sum of its proper divisors (380485482816).

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

169013224128 is a wasteful number, since it uses less digits than its factorization.

169013224128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580 (or 13563 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 169013224128 in words is "one hundred sixty-nine billion, thirteen million, two hundred twenty-four thousand, one hundred twenty-eight".