20422404403 has 4 divisors (see below), whose sum is σ = 20422958128. Its totient is φ = 20421850680.

The previous prime is 20422404383. The next prime is 20422404407. The reversal of 20422404403 is 30440422402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422404403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20422404407) 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, 217263 + ... + 296728.

It is an arithmetic number, because the mean of its divisors is an integer number (5105739532).

Almost surely, 2^20422404403 is an apocalyptic number.

20422404403 is a deficient number, since it is larger than the sum of its proper divisors (553725).

20422404403 is an equidigital number, since it uses as much as digits as its factorization.

20422404403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553724.

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 20422404403 its reverse (30440422402), we get a palindrome (50862826805).

The spelling of 20422404403 in words is "twenty billion, four hundred twenty-two million, four hundred four thousand, four hundred three".