20334105405 has 16 divisors (see below), whose sum is σ = 36149520960. Its totient is φ = 10844856144.

The previous prime is 20334105391. The next prime is 20334105499. The reversal of 20334105405 is 50450143302.

20334105405 is a `hidden beast` number, since 203 + 3 + 410 + 5 + 40 + 5 = 666.

It is not a de Polignac number, because 20334105405 - 2¹³ = 20334097213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75311367 + ... + 75311636.

It is an arithmetic number, because the mean of its divisors is an integer number (2259345060).

Almost surely, 2^20334105405 is an apocalyptic number.

It is an amenable number.

20334105405 is a deficient number, since it is larger than the sum of its proper divisors (15815415555).

20334105405 is a wasteful number, since it uses less digits than its factorization.

20334105405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150623017 (or 150623011 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20334105405 its reverse (50450143302), we get a palindrome (70784248707).

The spelling of 20334105405 in words is "twenty billion, three hundred thirty-four million, one hundred five thousand, four hundred five".