20424243467 has 4 divisors (see below), whose sum is σ = 20634802776. Its totient is φ = 20213684160.

The previous prime is 20424243451. The next prime is 20424243473. The reversal of 20424243467 is 76434242402.

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 20424243467 - 2⁴ = 20424243451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20424243467.

It is not an unprimeable number, because it can be changed into a prime (20424243067) 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, 105279509 + ... + 105279702.

It is an arithmetic number, because the mean of its divisors is an integer number (5158700694).

Almost surely, 2^20424243467 is an apocalyptic number.

20424243467 is a deficient number, since it is larger than the sum of its proper divisors (210559309).

20424243467 is an equidigital number, since it uses as much as digits as its factorization.

20424243467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210559308.

The product of its (nonzero) digits is 258048, while the sum is 38.

Adding to 20424243467 its reverse (76434242402), we get a palindrome (96858485869).

The spelling of 20424243467 in words is "twenty billion, four hundred twenty-four million, two hundred forty-three thousand, four hundred sixty-seven".