20453020434 has 288 divisors, whose sum is σ = 59193897984. Its totient is φ = 4949017920.

The previous prime is 20453020363. The next prime is 20453020487. The reversal of 20453020434 is 43402035402.

20453020434 is a `hidden beast` number, since 2 + 0 + 453 + 0 + 204 + 3 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20453020398 and 20453020407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 58942249 + ... + 58942595.

It is an arithmetic number, because the mean of its divisors is an integer number (205534368).

Almost surely, 2^20453020434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20453020434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29596948992).

20453020434 is an abundant number, since it is smaller than the sum of its proper divisors (38740877550).

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

20453020434 is a wasteful number, since it uses less digits than its factorization.

20453020434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20453020434 its reverse (43402035402), we get a palindrome (63855055836).

The spelling of 20453020434 in words is "twenty billion, four hundred fifty-three million, twenty thousand, four hundred thirty-four".