20872632143 has 4 divisors (see below), whose sum is σ = 22770144168. Its totient is φ = 18975120120.

The previous prime is 20872632049. The next prime is 20872632199. The reversal of 20872632143 is 34123627802.

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

It is not a de Polignac number, because 20872632143 - 2¹⁰ = 20872631119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20872632097 and 20872632106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20872682143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948755996 + ... + 948756017.

It is an arithmetic number, because the mean of its divisors is an integer number (5692536042).

Almost surely, 2^20872632143 is an apocalyptic number.

20872632143 is a deficient number, since it is larger than the sum of its proper divisors (1897512025).

20872632143 is a wasteful number, since it uses less digits than its factorization.

20872632143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897512024.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 20872632143 in words is "twenty billion, eight hundred seventy-two million, six hundred thirty-two thousand, one hundred forty-three".