164043431448 has 96 divisors (see below), whose sum is σ = 444899937600. Its totient is φ = 50381944704.

The previous prime is 164043431417. The next prime is 164043431449. The reversal of 164043431448 is 844134340461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164043431449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2181663 + ... + 2255601.

It is an arithmetic number, because the mean of its divisors is an integer number (4634374350).

Almost surely, 2^164043431448 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 164043431448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222449968800).

164043431448 is an abundant number, since it is smaller than the sum of its proper divisors (280856506152).

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

164043431448 is a wasteful number, since it uses less digits than its factorization.

164043431448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74521 (or 74504 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 164043431448 in words is "one hundred sixty-four billion, forty-three million, four hundred thirty-one thousand, four hundred forty-eight".