5116531079521 has 4 divisors (see below), whose sum is σ = 5116754327044. Its totient is φ = 5116307832000.

The previous prime is 5116531079509. The next prime is 5116531079533. The reversal of 5116531079521 is 1259701356115.

5116531079521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (5116531079509) and next prime (5116531079533).

It can be written as a sum of positive squares in 2 ways, for example, as 4082925390625 + 1033605688896 = 2020625^2 + 1016664^2 .

It is a cyclic number.

It is not a de Polignac number, because 5116531079521 - 2⁵ = 5116531079489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5116531079501) 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, 111589380 + ... + 111635221.

It is an arithmetic number, because the mean of its divisors is an integer number (1279188581761).

Almost surely, 2^{5116531079521} is an apocalyptic number.

It is an amenable number.

5116531079521 is a deficient number, since it is larger than the sum of its proper divisors (223247523).

5116531079521 is a wasteful number, since it uses less digits than its factorization.

5116531079521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223247522.

The product of its (nonzero) digits is 283500, while the sum is 46.

The spelling of 5116531079521 in words is "five trillion, one hundred sixteen billion, five hundred thirty-one million, seventy-nine thousand, five hundred twenty-one".