20344133550644 has 24 divisors (see below), whose sum is σ = 36470873298888. Its totient is φ = 9923888015360.

The previous prime is 20344133550613. The next prime is 20344133550659. The reversal of 20344133550644 is 44605533144302.

It can be written as a sum of positive squares in 4 ways, for example, as 8511152742544 + 11832980808100 = 2917388^2 + 3439910^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20344133550595 and 20344133550604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23554724 + ... + 24403140.

It is an arithmetic number, because the mean of its divisors is an integer number (1519619720787).

Almost surely, 2^{20344133550644} is an apocalyptic number.

It is an amenable number.

20344133550644 is a deficient number, since it is larger than the sum of its proper divisors (16126739748244).

20344133550644 is a wasteful number, since it uses less digits than its factorization.

20344133550644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994675 (or 994673 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 44.

Adding to 20344133550644 its reverse (44605533144302), we get a palindrome (64949666694946).

The spelling of 20344133550644 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-three million, five hundred fifty thousand, six hundred forty-four".