53115115213 has 6 divisors (see below), whose sum is σ = 55009828874. Its totient is φ = 51283558704.

The previous prime is 53115115199. The next prime is 53115115217. The reversal of 53115115213 is 31251151135.

It can be written as a sum of positive squares in 3 ways, for example, as 8976046564 + 44139068649 = 94742^2 + 210093^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53115115213 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 (53115115217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31577706 + ... + 31579387.

Almost surely, 2^53115115213 is an apocalyptic number.

It is an amenable number.

53115115213 is a deficient number, since it is larger than the sum of its proper divisors (1894713661).

53115115213 is an equidigital number, since it uses as much as digits as its factorization.

53115115213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63157151 (or 63157122 counting only the distinct ones).

The product of its digits is 2250, while the sum is 28.

Adding to 53115115213 its reverse (31251151135), we get a palindrome (84366266348).

The spelling of 53115115213 in words is "fifty-three billion, one hundred fifteen million, one hundred fifteen thousand, two hundred thirteen".