20430544253 has 8 divisors (see below), whose sum is σ = 23611544640. Its totient is φ = 17315131680.

The previous prime is 20430544247. The next prime is 20430544271. The reversal of 20430544253 is 35244503402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20430544253 - 2¹⁸ = 20430282109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430544853) 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, 16396283 + ... + 16397528.

It is an arithmetic number, because the mean of its divisors is an integer number (2951443080).

Almost surely, 2^20430544253 is an apocalyptic number.

It is an amenable number.

20430544253 is a deficient number, since it is larger than the sum of its proper divisors (3181000387).

20430544253 is an equidigital number, since it uses as much as digits as its factorization.

20430544253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32793907.

The product of its (nonzero) digits is 57600, while the sum is 32.

The spelling of 20430544253 in words is "twenty billion, four hundred thirty million, five hundred forty-four thousand, two hundred fifty-three".