20344512644611 has 4 divisors (see below), whose sum is σ = 20344522489000. Its totient is φ = 20344502800224.

The previous prime is 20344512644569. The next prime is 20344512644629. The reversal of 20344512644611 is 11644621544302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20344512644611 - 2¹⁷ = 20344512513539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344512644641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494886 + ... + 6397963.

It is an arithmetic number, because the mean of its divisors is an integer number (5086130622250).

Almost surely, 2^{20344512644611} is an apocalyptic number.

20344512644611 is a deficient number, since it is larger than the sum of its proper divisors (9844389).

20344512644611 is an equidigital number, since it uses as much as digits as its factorization.

20344512644611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844388.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 20344512644611 in words is "twenty trillion, three hundred forty-four billion, five hundred twelve million, six hundred forty-four thousand, six hundred eleven".