20435040204 has 12 divisors (see below), whose sum is σ = 47681760504. Its totient is φ = 6811680064.

The previous prime is 20435040181. The next prime is 20435040209. The reversal of 20435040204 is 40204053402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20435040209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851459997 + ... + 851460020.

It is an arithmetic number, because the mean of its divisors is an integer number (3973480042).

Almost surely, 2^20435040204 is an apocalyptic number.

It is an amenable number.

20435040204 is an abundant number, since it is smaller than the sum of its proper divisors (27246720300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20435040204 is a wasteful number, since it uses less digits than its factorization.

20435040204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702920024 (or 1702920022 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 20435040204 its reverse (40204053402), we get a palindrome (60639093606).

The spelling of 20435040204 in words is "twenty billion, four hundred thirty-five million, forty thousand, two hundred four".