20344633055156 has 12 divisors (see below), whose sum is σ = 35842054880100. Its totient is φ = 10104045946560.

The previous prime is 20344633055081. The next prime is 20344633055191. The reversal of 20344633055156 is 65155033644302.

It can be written as a sum of positive squares in 2 ways, for example, as 4845325464100 + 15499307591056 = 2201210^2 + 3936916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20344633055156.

It is a congruent number.

It is an unprimeable number.

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, 17067644585 + ... + 17067645776.

It is an arithmetic number, because the mean of its divisors is an integer number (2986837906675).

Almost surely, 2^{20344633055156} is an apocalyptic number.

It is an amenable number.

20344633055156 is a deficient number, since it is larger than the sum of its proper divisors (15497421824944).

20344633055156 is a wasteful number, since it uses less digits than its factorization.

20344633055156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34135290514 (or 34135290512 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

Adding to 20344633055156 its reverse (65155033644302), we get a palindrome (85499666699458).

The spelling of 20344633055156 in words is "twenty trillion, three hundred forty-four billion, six hundred thirty-three million, fifty-five thousand, one hundred fifty-six".