20434404035 has 16 divisors (see below), whose sum is σ = 24897437856. Its totient is φ = 16096954368.

The previous prime is 20434404017. The next prime is 20434404043. The reversal of 20434404035 is 53040443402.

It is a cyclic number.

It is not a de Polignac number, because 20434404035 - 2¹² = 20434399939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20434403989 and 20434404007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911177 + ... + 933333.

It is an arithmetic number, because the mean of its divisors is an integer number (1556089866).

Almost surely, 2^20434404035 is an apocalyptic number.

20434404035 is a deficient number, since it is larger than the sum of its proper divisors (4463033821).

20434404035 is a wasteful number, since it uses less digits than its factorization.

20434404035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24982.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 20434404035 its reverse (53040443402), we get a palindrome (73474847437).

The spelling of 20434404035 in words is "twenty billion, four hundred thirty-four million, four hundred four thousand, thirty-five".