5135513823 has 36 divisors (see below), whose sum is σ = 8201061960. Its totient is φ = 3094328160.

The previous prime is 5135513809. The next prime is 5135513849. The reversal of 5135513823 is 3283155315.

5135513823 is a `hidden beast` number, since 5 + 135 + 513 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 5135513823 - 2¹⁶ = 5135448287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5135513893) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 174768 + ... + 202026.

Almost surely, 2^5135513823 is an apocalyptic number.

5135513823 is a deficient number, since it is larger than the sum of its proper divisors (3065548137).

5135513823 is a wasteful number, since it uses less digits than its factorization.

5135513823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27460 (or 27446 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 5135513823 is about 71662.4994191523. The cubic root of 5135513823 is about 1725.2868049901.

The spelling of 5135513823 in words is "five billion, one hundred thirty-five million, five hundred thirteen thousand, eight hundred twenty-three".