20344161345354 has 192 divisors, whose sum is σ = 58388703759360. Its totient is φ = 4959295580160.

The previous prime is 20344161345337. The next prime is 20344161345359. The reversal of 20344161345354 is 45354316144302.

20344161345354 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 416 + 134 + 53 + 54 = 666.

It is not an unprimeable number, because it can be changed into a prime (20344161345359) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 792279 + ... + 6427754.

It is an arithmetic number, because the mean of its divisors is an integer number (304107832080).

Almost surely, 2^{20344161345354} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344161345354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29194351879680).

20344161345354 is an abundant number, since it is smaller than the sum of its proper divisors (38044542414006).

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

20344161345354 is a wasteful number, since it uses less digits than its factorization.

20344161345354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7220185 (or 7220182 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

Adding to 20344161345354 its reverse (45354316144302), we get a palindrome (65698477489656).

The spelling of 20344161345354 in words is "twenty trillion, three hundred forty-four billion, one hundred sixty-one million, three hundred forty-five thousand, three hundred fifty-four".