20434545454104 has 96 divisors (see below), whose sum is σ = 55701896643120. Its totient is φ = 6767421343488.

The previous prime is 20434545454097. The next prime is 20434545454157. The reversal of 20434545454104 is 40145454543402.

20434545454104 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 4 + 54 + 54 + 541 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20434545454104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114001719 + ... + 114180825.

Almost surely, 2^{20434545454104} is an apocalyptic number.

20434545454104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20434545454104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27850948321560).

20434545454104 is an abundant number, since it is smaller than the sum of its proper divisors (35267351189016).

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

20434545454104 is a wasteful number, since it uses less digits than its factorization.

20434545454104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189369 (or 189362 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 45.

Adding to 20434545454104 its reverse (40145454543402), we get a palindrome (60579999997506).

The spelling of 20434545454104 in words is "twenty trillion, four hundred thirty-four billion, five hundred forty-five million, four hundred fifty-four thousand, one hundred four".