53440365635201 has 4 divisors (see below), whose sum is σ = 53440381094100. Its totient is φ = 53440350176304.

The previous prime is 53440365635197. The next prime is 53440365635221. The reversal of 53440365635201 is 10253656304435.

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 11970049970176 + 41470315665025 = 3459776^2 + 6439745^2 .

It is a cyclic number.

It is not a de Polignac number, because 53440365635201 - 2² = 53440365635197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53440365635221) 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, 98555 + ... + 10338783.

It is an arithmetic number, because the mean of its divisors is an integer number (13360095273525).

Almost surely, 2^{53440365635201} is an apocalyptic number.

It is an amenable number.

53440365635201 is a deficient number, since it is larger than the sum of its proper divisors (15458899).

53440365635201 is a wasteful number, since it uses less digits than its factorization.

53440365635201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458898.

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

The spelling of 53440365635201 in words is "fifty-three trillion, four hundred forty billion, three hundred sixty-five million, six hundred thirty-five thousand, two hundred one".