516135254331 has 4 divisors (see below), whose sum is σ = 688180339112. Its totient is φ = 344090169552.

The previous prime is 516135254311. The next prime is 516135254347. The reversal of 516135254331 is 133452531615.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 516135254331 - 2⁷ = 516135254203 is a prime.

It is a super-2 number, since 2×516135254331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 516135254331.

It is not an unprimeable number, because it can be changed into a prime (516135254311) 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, 86022542386 + ... + 86022542391.

It is an arithmetic number, because the mean of its divisors is an integer number (172045084778).

Almost surely, 2^516135254331 is an apocalyptic number.

516135254331 is a deficient number, since it is larger than the sum of its proper divisors (172045084781).

516135254331 is a wasteful number, since it uses less digits than its factorization.

516135254331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172045084780.

The product of its digits is 162000, while the sum is 39.

Adding to 516135254331 its reverse (133452531615), we get a palindrome (649587785946).

The spelling of 516135254331 in words is "five hundred sixteen billion, one hundred thirty-five million, two hundred fifty-four thousand, three hundred thirty-one".