20304412427 has 4 divisors (see below), whose sum is σ = 21866290320. Its totient is φ = 18742534536.

The previous prime is 20304412421. The next prime is 20304412459. The reversal of 20304412427 is 72421440302.

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 20304412427 - 2⁶ = 20304412363 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 20304412427.

It is not an unprimeable number, because it can be changed into a prime (20304412421) 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, 780938927 + ... + 780938952.

It is an arithmetic number, because the mean of its divisors is an integer number (5466572580).

Almost surely, 2^20304412427 is an apocalyptic number.

20304412427 is a deficient number, since it is larger than the sum of its proper divisors (1561877893).

20304412427 is a wasteful number, since it uses less digits than its factorization.

20304412427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561877892.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 20304412427 its reverse (72421440302), we get a palindrome (92725852729).

The spelling of 20304412427 in words is "twenty billion, three hundred four million, four hundred twelve thousand, four hundred twenty-seven".