53205216634 has 4 divisors (see below), whose sum is σ = 79807824954. Its totient is φ = 26602608316.

The previous prime is 53205216629. The next prime is 53205216643. The reversal of 53205216634 is 43661250235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38889812025 + 14315404609 = 197205^2 + 119647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53205216593 and 53205216602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13301304157 + ... + 13301304160.

Almost surely, 2^53205216634 is an apocalyptic number.

53205216634 is a deficient number, since it is larger than the sum of its proper divisors (26602608320).

53205216634 is a wasteful number, since it uses less digits than its factorization.

53205216634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26602608319.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 53205216634 its reverse (43661250235), we get a palindrome (96866466869).

The spelling of 53205216634 in words is "fifty-three billion, two hundred five million, two hundred sixteen thousand, six hundred thirty-four".