53193664505 has 4 divisors (see below), whose sum is σ = 63832397412. Its totient is φ = 42554931600.

The previous prime is 53193664501. The next prime is 53193664523. The reversal of 53193664505 is 50546639135.

It is a happy number.

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 16134334441 + 37059330064 = 127021^2 + 192508^2 .

It is not a de Polignac number, because 53193664505 - 2² = 53193664501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53193664505.

It is not an unprimeable number, because it can be changed into a prime (53193664501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319366446 + ... + 5319366455.

It is an arithmetic number, because the mean of its divisors is an integer number (15958099353).

Almost surely, 2^53193664505 is an apocalyptic number.

It is an amenable number.

53193664505 is a deficient number, since it is larger than the sum of its proper divisors (10638732907).

53193664505 is a wasteful number, since it uses less digits than its factorization.

53193664505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638732906.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 53193664505 in words is "fifty-three billion, one hundred ninety-three million, six hundred sixty-four thousand, five hundred five".