20532273143 has 4 divisors (see below), whose sum is σ = 20743946160. Its totient is φ = 20320600128.

The previous prime is 20532273119. The next prime is 20532273173. The reversal of 20532273143 is 34137223502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20532273143 - 2²² = 20528078839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532273103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105836363 + ... + 105836556.

It is an arithmetic number, because the mean of its divisors is an integer number (5185986540).

Almost surely, 2^20532273143 is an apocalyptic number.

20532273143 is a deficient number, since it is larger than the sum of its proper divisors (211673017).

20532273143 is an equidigital number, since it uses as much as digits as its factorization.

20532273143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211673016.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 20532273143 its reverse (34137223502), we get a palindrome (54669496645).

The spelling of 20532273143 in words is "twenty billion, five hundred thirty-two million, two hundred seventy-three thousand, one hundred forty-three".