20453013531143 has 2 divisors, whose sum is σ = 20453013531144. Its totient is φ = 20453013531142.

The previous prime is 20453013531131. The next prime is 20453013531151. The reversal of 20453013531143 is 34113531035402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20453013531143 - 2¹⁸ = 20453013268999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20453013531113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226506765571 + 10226506765572.

It is an arithmetic number, because the mean of its divisors is an integer number (10226506765572).

Almost surely, 2^{20453013531143} is an apocalyptic number.

20453013531143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20453013531143 is an equidigital number, since it uses as much as digits as its factorization.

20453013531143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 20453013531143 its reverse (34113531035402), we get a palindrome (54566544566545).

The spelling of 20453013531143 in words is "twenty trillion, four hundred fifty-three billion, thirteen million, five hundred thirty-one thousand, one hundred forty-three".