20331434343342 has 16 divisors (see below), whose sum is σ = 40740916425552. Its totient is φ = 6764136824640.

The previous prime is 20331434343331. The next prime is 20331434343347. The reversal of 20331434343342 is 24334343413302.

It is a self number, because there is not a number n which added to its sum of digits gives 20331434343342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331434343347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251985733 + ... + 3251991984.

It is an arithmetic number, because the mean of its divisors is an integer number (2546307276597).

Almost surely, 2^{20331434343342} is an apocalyptic number.

20331434343342 is an abundant number, since it is smaller than the sum of its proper divisors (20409482082210).

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

20331434343342 is a wasteful number, since it uses less digits than its factorization.

20331434343342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503978243.

The product of its (nonzero) digits is 746496, while the sum is 39.

Adding to 20331434343342 its reverse (24334343413302), we get a palindrome (44665777756644).

The spelling of 20331434343342 in words is "twenty trillion, three hundred thirty-one billion, four hundred thirty-four million, three hundred forty-three thousand, three hundred forty-two".