20035331405 has 16 divisors (see below), whose sum is σ = 24523720704. Its totient is φ = 15710425920.

The previous prime is 20035331401. The next prime is 20035331411. The reversal of 20035331405 is 50413353002.

It is not a de Polignac number, because 20035331405 - 2² = 20035331401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20035331401) 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 15 ways as a sum of consecutive naturals, for example, 137366 + ... + 242775.

It is an arithmetic number, because the mean of its divisors is an integer number (1532732544).

Almost surely, 2^20035331405 is an apocalyptic number.

It is an amenable number.

20035331405 is a deficient number, since it is larger than the sum of its proper divisors (4488389299).

20035331405 is a wasteful number, since it uses less digits than its factorization.

20035331405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380356.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 20035331405 its reverse (50413353002), we get a palindrome (70448684407).

The spelling of 20035331405 in words is "twenty billion, thirty-five million, three hundred thirty-one thousand, four hundred five".