20404534235 has 4 divisors (see below), whose sum is σ = 24485441088. Its totient is φ = 16323627384.

The previous prime is 20404534219. The next prime is 20404534237. The reversal of 20404534235 is 53243540402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20404534235 - 2⁴ = 20404534219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404534237) 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, 2040453419 + ... + 2040453428.

It is an arithmetic number, because the mean of its divisors is an integer number (6121360272).

Almost surely, 2^20404534235 is an apocalyptic number.

20404534235 is a deficient number, since it is larger than the sum of its proper divisors (4080906853).

20404534235 is an equidigital number, since it uses as much as digits as its factorization.

20404534235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080906852.

The product of its (nonzero) digits is 57600, while the sum is 32.

The spelling of 20404534235 in words is "twenty billion, four hundred four million, five hundred thirty-four thousand, two hundred thirty-five".