53563636913 has 4 divisors (see below), whose sum is σ = 54165475620. Its totient is φ = 52961798208.

The previous prime is 53563636901. The next prime is 53563636921. The reversal of 53563636913 is 31963636535.

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 28671632929 + 24892003984 = 169327^2 + 157772^2 .

It is a cyclic number.

It is not a de Polignac number, because 53563636913 - 2⁴ = 53563636897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53563636943) 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, 300919220 + ... + 300919397.

It is an arithmetic number, because the mean of its divisors is an integer number (13541368905).

Almost surely, 2^53563636913 is an apocalyptic number.

It is an amenable number.

53563636913 is a deficient number, since it is larger than the sum of its proper divisors (601838707).

53563636913 is an equidigital number, since it uses as much as digits as its factorization.

53563636913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601838706.

The product of its digits is 3936600, while the sum is 50.

The spelling of 53563636913 in words is "fifty-three billion, five hundred sixty-three million, six hundred thirty-six thousand, nine hundred thirteen".