20404412012 has 6 divisors (see below), whose sum is σ = 35707721028. Its totient is φ = 10202206004.

The previous prime is 20404411997. The next prime is 20404412023. The reversal of 20404412012 is 21021440402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550551498 + ... + 2550551505.

It is an arithmetic number, because the mean of its divisors is an integer number (5951286838).

Almost surely, 2^20404412012 is an apocalyptic number.

It is an amenable number.

20404412012 is a deficient number, since it is larger than the sum of its proper divisors (15303309016).

20404412012 is a wasteful number, since it uses less digits than its factorization.

20404412012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101103007 (or 5101103005 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20404412012 its reverse (21021440402), we get a palindrome (41425852414).

The spelling of 20404412012 in words is "twenty billion, four hundred four million, four hundred twelve thousand, twelve".