163144345434 has 96 divisors (see below), whose sum is σ = 396376826496. Its totient is φ = 43843092480.

The previous prime is 163144345433. The next prime is 163144345447. The reversal of 163144345434 is 434543441361.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (163144345433) 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, 25644414 + ... + 25650774.

It is an arithmetic number, because the mean of its divisors is an integer number (4128925276).

Almost surely, 2^163144345434 is an apocalyptic number.

163144345434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163144345434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198188413248).

163144345434 is an abundant number, since it is smaller than the sum of its proper divisors (233232481062).

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

163144345434 is a wasteful number, since it uses less digits than its factorization.

163144345434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520 (or 8503 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

Adding to 163144345434 its reverse (434543441361), we get a palindrome (597687786795).

The spelling of 163144345434 in words is "one hundred sixty-three billion, one hundred forty-four million, three hundred forty-five thousand, four hundred thirty-four".