5116513721 has 8 divisors (see below), whose sum is σ = 5589274944. Its totient is φ = 4645023120.

The previous prime is 5116513711. The next prime is 5116513723. The reversal of 5116513721 is 1273156115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5116513721 - 2³⁰ = 4042771897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5116513723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309221 + ... + 325346.

It is an arithmetic number, because the mean of its divisors is an integer number (698659368).

Almost surely, 2^5116513721 is an apocalyptic number.

It is an amenable number.

5116513721 is a deficient number, since it is larger than the sum of its proper divisors (472761223).

5116513721 is a wasteful number, since it uses less digits than its factorization.

5116513721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635311.

The product of its digits is 6300, while the sum is 32.

The square root of 5116513721 is about 71529.8100165239. The cubic root of 5116513721 is about 1723.1564673466.

Adding to 5116513721 its reverse (1273156115), we get a palindrome (6389669836).

The spelling of 5116513721 in words is "five billion, one hundred sixteen million, five hundred thirteen thousand, seven hundred twenty-one".