164644430144 has 56 divisors (see below), whose sum is σ = 330453552960. Its totient is φ = 81383740416.

The previous prime is 164644430129. The next prime is 164644430161. The reversal of 164644430144 is 441034446461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3310292 + ... + 3359660.

Almost surely, 2^164644430144 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 164644430144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165226776480).

164644430144 is an abundant number, since it is smaller than the sum of its proper divisors (165809122816).

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

164644430144 is a wasteful number, since it uses less digits than its factorization.

164644430144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49975 (or 49965 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 164644430144 in words is "one hundred sixty-four billion, six hundred forty-four million, four hundred thirty thousand, one hundred forty-four".