20553343301 has 4 divisors (see below), whose sum is σ = 20598318252. Its totient is φ = 20508368352.

The previous prime is 20553343297. The next prime is 20553343303. The reversal of 20553343301 is 10334335502.

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 17246518276 + 3306825025 = 131326^2 + 57505^2 .

It is a cyclic number.

It is not a de Polignac number, because 20553343301 - 2² = 20553343297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553343303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22486790 + ... + 22487703.

It is an arithmetic number, because the mean of its divisors is an integer number (5149579563).

Almost surely, 2^20553343301 is an apocalyptic number.

It is an amenable number.

20553343301 is a deficient number, since it is larger than the sum of its proper divisors (44974951).

20553343301 is an equidigital number, since it uses as much as digits as its factorization.

20553343301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44974950.

The product of its (nonzero) digits is 16200, while the sum is 29.

Adding to 20553343301 its reverse (10334335502), we get a palindrome (30887678803).

The spelling of 20553343301 in words is "twenty billion, five hundred fifty-three million, three hundred forty-three thousand, three hundred one".