20346514412143 has 4 divisors (see below), whose sum is σ = 20691370588680. Its totient is φ = 20001658235608.

The previous prime is 20346514412111. The next prime is 20346514412291. The reversal of 20346514412143 is 34121441564302.

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 20346514412143 - 2⁵ = 20346514412111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20346514412096 and 20346514412105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346514512143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172428088180 + ... + 172428088297.

It is an arithmetic number, because the mean of its divisors is an integer number (5172842647170).

Almost surely, 2^{20346514412143} is an apocalyptic number.

20346514412143 is a deficient number, since it is larger than the sum of its proper divisors (344856176537).

20346514412143 is an equidigital number, since it uses as much as digits as its factorization.

20346514412143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344856176536.

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 20346514412143 its reverse (34121441564302), we get a palindrome (54467955976445).

The spelling of 20346514412143 in words is "twenty trillion, three hundred forty-six billion, five hundred fourteen million, four hundred twelve thousand, one hundred forty-three".