20344743601844 has 12 divisors (see below), whose sum is σ = 35603428812000. Its totient is φ = 10172335369848.

The previous prime is 20344743601841. The next prime is 20344743601859. The reversal of 20344743601844 is 44810634744302.

It is a junction number, because it is equal to n+sod(n) for n = 20344743601792 and 20344743601801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344743601841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831394 + ... + 10100505.

It is an arithmetic number, because the mean of its divisors is an integer number (2966952401000).

Almost surely, 2^{20344743601844} is an apocalyptic number.

It is an amenable number.

20344743601844 is a deficient number, since it is larger than the sum of its proper divisors (15258685210156).

20344743601844 is a wasteful number, since it uses less digits than its factorization.

20344743601844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18215542 (or 18215540 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 50.

The spelling of 20344743601844 in words is "twenty trillion, three hundred forty-four billion, seven hundred forty-three million, six hundred one thousand, eight hundred forty-four".