198434065934346 has 128 divisors (see below), whose sum is σ = 452475621089280. Its totient is φ = 57427416076800.

The previous prime is 198434065934339. The next prime is 198434065934347. The reversal of 198434065934346 is 643439560434891.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198434065934347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12345793366 + ... + 12345809438.

It is an arithmetic number, because the mean of its divisors is an integer number (3534965789760).

Almost surely, 2^{198434065934346} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198434065934346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226237810544640).

198434065934346 is an abundant number, since it is smaller than the sum of its proper divisors (254041555154934).

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

198434065934346 is a wasteful number, since it uses less digits than its factorization.

198434065934346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28292.

The product of its (nonzero) digits is 806215680, while the sum is 69.

It can be divided in two parts, 19843406 and 5934346, that added together give a palindrome (25777752).

The spelling of 198434065934346 in words is "one hundred ninety-eight trillion, four hundred thirty-four billion, sixty-five million, nine hundred thirty-four thousand, three hundred forty-six".