20344633055641 has 4 divisors (see below), whose sum is σ = 20344647219300. Its totient is φ = 20344618891984.

The previous prime is 20344633055629. The next prime is 20344633055701. The reversal of 20344633055641 is 14655033644302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19913870550016 + 430762505625 = 4462496^2 + 656325^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344633055641 - 2⁵ = 20344633055609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20344633055591 and 20344633055600.

It is not an unprimeable number, because it can be changed into a prime (20344633055741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4648546 + ... + 7892923.

It is an arithmetic number, because the mean of its divisors is an integer number (5086161804825).

Almost surely, 2^{20344633055641} is an apocalyptic number.

It is an amenable number.

20344633055641 is a deficient number, since it is larger than the sum of its proper divisors (14163659).

20344633055641 is a wasteful number, since it uses less digits than its factorization.

20344633055641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14163658.

The product of its (nonzero) digits is 3110400, while the sum is 46.

Adding to 20344633055641 its reverse (14655033644302), we get a palindrome (34999666699943).

The spelling of 20344633055641 in words is "twenty trillion, three hundred forty-four billion, six hundred thirty-three million, fifty-five thousand, six hundred forty-one".