53205215503 has 16 divisors (see below), whose sum is σ = 62955234720. Its totient is φ = 44412851200.

The previous prime is 53205215477. The next prime is 53205215509. The reversal of 53205215503 is 30551250235.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53205215503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53205215509) 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 15 ways as a sum of consecutive naturals, for example, 3462088 + ... + 3477421.

It is an arithmetic number, because the mean of its divisors is an integer number (3934702170).

Almost surely, 2^53205215503 is an apocalyptic number.

53205215503 is a deficient number, since it is larger than the sum of its proper divisors (9750019217).

53205215503 is a wasteful number, since it uses less digits than its factorization.

53205215503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939578.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 53205215503 its reverse (30551250235), we get a palindrome (83756465738).

The spelling of 53205215503 in words is "fifty-three billion, two hundred five million, two hundred fifteen thousand, five hundred three".