20400422404 has 12 divisors (see below), whose sum is σ = 36530989264. Its totient is φ = 9962996904.

The previous prime is 20400422387. The next prime is 20400422407. The reversal of 20400422404 is 40422400402.

It is not an unprimeable number, because it can be changed into a prime (20400422407) 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, 59303382 + ... + 59303725.

Almost surely, 2^20400422404 is an apocalyptic number.

It is an amenable number.

20400422404 is a deficient number, since it is larger than the sum of its proper divisors (16130566860).

20400422404 is a wasteful number, since it uses less digits than its factorization.

20400422404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118607154 (or 118607152 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20400422404 its reverse (40422400402), we get a palindrome (60822822806).

The spelling of 20400422404 in words is "twenty billion, four hundred million, four hundred twenty-two thousand, four hundred four".