5615616065 has 4 divisors (see below), whose sum is σ = 6738739284. Its totient is φ = 4492492848.

The previous prime is 5615616049. The next prime is 5615616077. The reversal of 5615616065 is 5606165165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5606165165 = 5 ⋅1121233033.

It can be written as a sum of positive squares in 2 ways, for example, as 3438180496 + 2177435569 = 58636^2 + 46663^2 .

It is a cyclic number.

It is not a de Polignac number, because 5615616065 - 2⁴ = 5615616049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561561602 + ... + 561561611.

It is an arithmetic number, because the mean of its divisors is an integer number (1684684821).

Almost surely, 2^5615616065 is an apocalyptic number.

It is an amenable number.

5615616065 is a deficient number, since it is larger than the sum of its proper divisors (1123123219).

5615616065 is a wasteful number, since it uses less digits than its factorization.

5615616065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123123218.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 5615616065 is about 74937.4143202179. The cubic root of 5615616065 is about 1777.4571342122.

The spelling of 5615616065 in words is "five billion, six hundred fifteen million, six hundred sixteen thousand, sixty-five".