20434043404 has 6 divisors (see below), whose sum is σ = 35759575964. Its totient is φ = 10217021700.

The previous prime is 20434043369. The next prime is 20434043429. The reversal of 20434043404 is 40434043402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554255422 + ... + 2554255429.

Almost surely, 2^20434043404 is an apocalyptic number.

It is an amenable number.

20434043404 is a deficient number, since it is larger than the sum of its proper divisors (15325532560).

20434043404 is a wasteful number, since it uses less digits than its factorization.

20434043404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108510855 (or 5108510853 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20434043404 its reverse (40434043402), we get a palindrome (60868086806).

The spelling of 20434043404 in words is "twenty billion, four hundred thirty-four million, forty-three thousand, four hundred four".