5135766685729 has 3 divisors (see below), whose sum is σ = 5135768951953. Its totient is φ = 5135764419506.

The previous prime is 5135766685657. The next prime is 5135766685739. The reversal of 5135766685729 is 9275866675315.

It is a happy number.

The square root of 5135766685729 is 2266223.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 5135766685729 - 2²³ = 5135758297121 is a prime.

It is a super-2 number, since 2×5135766685729² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5135766685739) 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 2 ways as a sum of consecutive naturals, for example, 1133112 + ... + 3399334.

Almost surely, 2^{5135766685729} is an apocalyptic number.

5135766685729 is the 2266223-rd square number.

5135766685729 is the 1133112-nd centered octagonal number.

It is an amenable number.

5135766685729 is a deficient number, since it is larger than the sum of its proper divisors (2266224).

5135766685729 is an frugal number, since it uses more digits than its factorization.

5135766685729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532446 (or 2266223 counting only the distinct ones).

The product of its digits is 571536000, while the sum is 70.

The spelling of 5135766685729 in words is "five trillion, one hundred thirty-five billion, seven hundred sixty-six million, six hundred eighty-five thousand, seven hundred twenty-nine".