53163361633 has 4 divisors (see below), whose sum is σ = 53165265300. Its totient is φ = 53161457968.

The previous prime is 53163361609. The next prime is 53163361687. The reversal of 53163361633 is 33616336135.

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 30391646224 + 22771715409 = 174332^2 + 150903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53163361633 is a prime.

It is a super-2 number, since 2×53163361633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53163361033) 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, 909310 + ... + 966007.

It is an arithmetic number, because the mean of its divisors is an integer number (13291316325).

Almost surely, 2^53163361633 is an apocalyptic number.

It is an amenable number.

53163361633 is a deficient number, since it is larger than the sum of its proper divisors (1903667).

53163361633 is a wasteful number, since it uses less digits than its factorization.

53163361633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903666.

The product of its digits is 262440, while the sum is 40.

Adding to 53163361633 its reverse (33616336135), we get a palindrome (86779697768).

The spelling of 53163361633 in words is "fifty-three billion, one hundred sixty-three million, three hundred sixty-one thousand, six hundred thirty-three".