20413140243 has 4 divisors (see below), whose sum is σ = 27217520328. Its totient is φ = 13608760160.

The previous prime is 20413140233. The next prime is 20413140247. The reversal of 20413140243 is 34204131402.

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 20413140243 - 2⁵ = 20413140211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20413140247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402190038 + ... + 3402190043.

It is an arithmetic number, because the mean of its divisors is an integer number (6804380082).

Almost surely, 2^20413140243 is an apocalyptic number.

20413140243 is a deficient number, since it is larger than the sum of its proper divisors (6804380085).

20413140243 is an equidigital number, since it uses as much as digits as its factorization.

20413140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804380084.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20413140243 its reverse (34204131402), we get a palindrome (54617271645).

The spelling of 20413140243 in words is "twenty billion, four hundred thirteen million, one hundred forty thousand, two hundred forty-three".