5156515865 has 8 divisors (see below), whose sum is σ = 6244588680. Its totient is φ = 4087366272.

The previous prime is 5156515853. The next prime is 5156515873. The reversal of 5156515865 is 5685156515.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1149752464 + 4006763401 = 33908^2 + 63299^2 .

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 5156515865 - 2²⁴ = 5139738649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4730204 + ... + 4731293.

It is an arithmetic number, because the mean of its divisors is an integer number (780573585).

Almost surely, 2^5156515865 is an apocalyptic number.

It is an amenable number.

5156515865 is a deficient number, since it is larger than the sum of its proper divisors (1088072815).

5156515865 is a wasteful number, since it uses less digits than its factorization.

5156515865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461611.

The product of its digits is 900000, while the sum is 47.

The square root of 5156515865 is about 71808.8843041027. The cubic root of 5156515865 is about 1727.6354997549.

The spelling of 5156515865 in words is "five billion, one hundred fifty-six million, five hundred fifteen thousand, eight hundred sixty-five".