20343344420 has 48 divisors (see below), whose sum is σ = 48911869440. Its totient is φ = 6962312064.

The previous prime is 20343344401. The next prime is 20343344443. The reversal of 20343344420 is 2444334302.

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, 52460 + ... + 208419.

It is an arithmetic number, because the mean of its divisors is an integer number (1018997280).

Almost surely, 2^20343344420 is an apocalyptic number.

20343344420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343344420 is an abundant number, since it is smaller than the sum of its proper divisors (28568525020).

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

20343344420 is a wasteful number, since it uses less digits than its factorization.

20343344420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261452 (or 261450 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 20343344420 its reverse (2444334302), we get a palindrome (22787678722).

The spelling of 20343344420 in words is "twenty billion, three hundred forty-three million, three hundred forty-four thousand, four hundred twenty".