20344020323412 has 48 divisors (see below), whose sum is σ = 48255885925632. Its totient is φ = 6669020561280.

The previous prime is 20344020323369. The next prime is 20344020323413. The reversal of 20344020323412 is 21432302044302.

It is a self number, because there is not a number n which added to its sum of digits gives 20344020323412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344020323413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857718 + ... + 6643730.

It is an arithmetic number, because the mean of its divisors is an integer number (1005330956784).

Almost surely, 2^{20344020323412} is an apocalyptic number.

It is an amenable number.

20344020323412 is an abundant number, since it is smaller than the sum of its proper divisors (27911865602220).

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

20344020323412 is a wasteful number, since it uses less digits than its factorization.

20344020323412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791888 (or 4791886 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 20344020323412 its reverse (21432302044302), we get a palindrome (41776322367714).

The spelling of 20344020323412 in words is "twenty trillion, three hundred forty-four billion, twenty million, three hundred twenty-three thousand, four hundred twelve".