20641426344053 has 4 divisors (see below), whose sum is σ = 20641453033440. Its totient is φ = 20641399654668.

The previous prime is 20641426344043. The next prime is 20641426344073. The reversal of 20641426344053 is 35044362414602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20641426344053 - 2⁴ = 20641426344037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20641426343995 and 20641426344013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641426344043) 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, 12148883 + ... + 13743296.

It is an arithmetic number, because the mean of its divisors is an integer number (5160363258360).

Almost surely, 2^{20641426344053} is an apocalyptic number.

It is an amenable number.

20641426344053 is a deficient number, since it is larger than the sum of its proper divisors (26689387).

20641426344053 is an equidigital number, since it uses as much as digits as its factorization.

20641426344053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26689386.

The product of its (nonzero) digits is 1658880, while the sum is 44.

Adding to 20641426344053 its reverse (35044362414602), we get a palindrome (55685788758655).

The spelling of 20641426344053 in words is "twenty trillion, six hundred forty-one billion, four hundred twenty-six million, three hundred forty-four thousand, fifty-three".