20041415243 has 4 divisors (see below), whose sum is σ = 21220322040. Its totient is φ = 18862508448.

The previous prime is 20041415237. The next prime is 20041415297. The reversal of 20041415243 is 34251414002.

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 20041415243 - 2⁶ = 20041415179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20041415203) 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, 589453373 + ... + 589453406.

It is an arithmetic number, because the mean of its divisors is an integer number (5305080510).

Almost surely, 2^20041415243 is an apocalyptic number.

20041415243 is a deficient number, since it is larger than the sum of its proper divisors (1178906797).

20041415243 is a wasteful number, since it uses less digits than its factorization.

20041415243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178906796.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20041415243 its reverse (34251414002), we get a palindrome (54292829245).

The spelling of 20041415243 in words is "twenty billion, forty-one million, four hundred fifteen thousand, two hundred forty-three".