20423113435 has 16 divisors (see below), whose sum is σ = 25274177280. Its totient is φ = 15835331680.

The previous prime is 20423113429. The next prime is 20423113481. The reversal of 20423113435 is 53431132402.

It is a happy number.

It is not a de Polignac number, because 20423113435 - 2³ = 20423113427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466597 + ... + 508486.

It is an arithmetic number, because the mean of its divisors is an integer number (1579636080).

Almost surely, 2^20423113435 is an apocalyptic number.

20423113435 is a deficient number, since it is larger than the sum of its proper divisors (4851063845).

20423113435 is an equidigital number, since it uses as much as digits as its factorization.

20423113435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975218.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20423113435 its reverse (53431132402), we get a palindrome (73854245837).

The spelling of 20423113435 in words is "twenty billion, four hundred twenty-three million, one hundred thirteen thousand, four hundred thirty-five".