5156515565 has 8 divisors (see below), whose sum is σ = 6551808120. Its totient is φ = 3882552832.

The previous prime is 5156515561. The next prime is 5156515577. The reversal of 5156515565 is 5655156515.

It can be written as a sum of positive squares in 4 ways, for example, as 2571199849 + 2585315716 = 50707^2 + 50846^2 .

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 5156515565 - 2² = 5156515561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156515561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30332360 + ... + 30332529.

It is an arithmetic number, because the mean of its divisors is an integer number (818976015).

Almost surely, 2^5156515565 is an apocalyptic number.

It is an amenable number.

5156515565 is a deficient number, since it is larger than the sum of its proper divisors (1395292555).

5156515565 is a wasteful number, since it uses less digits than its factorization.

5156515565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60664911.

The product of its digits is 562500, while the sum is 44.

The square root of 5156515565 is about 71808.8822152246. The cubic root of 5156515565 is about 1727.6354662509.

The spelling of 5156515565 in words is "five billion, one hundred fifty-six million, five hundred fifteen thousand, five hundred sixty-five".