20453528129472 has 168 divisors, whose sum is σ = 59024837918592. Its totient is φ = 6771516480000.

The previous prime is 20453528129471. The next prime is 20453528129477. The reversal of 20453528129472 is 27492182535402.

It is a happy number.

20453528129472 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 3 + 5 + 281 + 294 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453528129471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604205347 + ... + 604239197.

It is an arithmetic number, because the mean of its divisors is an integer number (351338320944).

Almost surely, 2^{20453528129472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20453528129472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29512418959296).

20453528129472 is an abundant number, since it is smaller than the sum of its proper divisors (38571309789120).

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

20453528129472 is a wasteful number, since it uses less digits than its factorization.

20453528129472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40967 (or 40954 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 20453528129472 in words is "twenty trillion, four hundred fifty-three billion, five hundred twenty-eight million, one hundred twenty-nine thousand, four hundred seventy-two".