20400005335 has 4 divisors (see below), whose sum is σ = 24480006408. Its totient is φ = 16320004264.

The previous prime is 20400005317. The next prime is 20400005357. The reversal of 20400005335 is 53350000402.

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 20400005335 - 2¹³ = 20399997143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040000529 + ... + 2040000538.

It is an arithmetic number, because the mean of its divisors is an integer number (6120001602).

Almost surely, 2^20400005335 is an apocalyptic number.

20400005335 is a deficient number, since it is larger than the sum of its proper divisors (4080001073).

20400005335 is an equidigital number, since it uses as much as digits as its factorization.

20400005335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080001072.

The product of its (nonzero) digits is 1800, while the sum is 22.

Adding to 20400005335 its reverse (53350000402), we get a palindrome (73750005737).

The spelling of 20400005335 in words is "twenty billion, four hundred million, five thousand, three hundred thirty-five".