20053142523520 has 64 divisors (see below), whose sum is σ = 49235207250600. Its totient is φ = 7804466270208.

The previous prime is 20053142523373. The next prime is 20053142523521. The reversal of 20053142523520 is 2532524135002.

It can be written as a sum of positive squares in 4 ways, for example, as 19979684178496 + 73458345024 = 4469864^2 + 271032^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (20053142523521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423395715 + ... + 423443074.

Almost surely, 2^{20053142523520} is an apocalyptic number.

20053142523520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20053142523520 is an abundant number, since it is smaller than the sum of its proper divisors (29182064727080).

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

20053142523520 is an equidigital number, since it uses as much as digits as its factorization.

20053142523520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846838845 (or 846838833 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 20053142523520 its reverse (2532524135002), we get a palindrome (22585666658522).

The spelling of 20053142523520 in words is "twenty trillion, fifty-three billion, one hundred forty-two million, five hundred twenty-three thousand, five hundred twenty".