20344334512 has 40 divisors (see below), whose sum is σ = 41991687360. Its totient is φ = 9520672320.

The previous prime is 20344334501. The next prime is 20344334519. The reversal of 20344334512 is 21543344302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20344334519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377914 + ... + 428377.

It is an arithmetic number, because the mean of its divisors is an integer number (1049792184).

Almost surely, 2^20344334512 is an apocalyptic number.

It is an amenable number.

20344334512 is an abundant number, since it is smaller than the sum of its proper divisors (21647352848).

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

20344334512 is a wasteful number, since it uses less digits than its factorization.

20344334512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806401 (or 806395 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20344334512 its reverse (21543344302), we get a palindrome (41887678814).

The spelling of 20344334512 in words is "twenty billion, three hundred forty-four million, three hundred thirty-four thousand, five hundred twelve".