5615106661665 has 40 divisors (see below), whose sum is σ = 10069870833000. Its totient is φ = 2993452478208.

The previous prime is 5615106661613. The next prime is 5615106661693. The reversal of 5615106661665 is 5661666015165.

It can be written as a sum of positive squares in 4 ways, for example, as 333530505441 + 5281576156224 = 577521^2 + 2298168^2 .

It is not a de Polignac number, because 5615106661665 - 2¹⁶ = 5615106596129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1986540 + ... + 3895709.

It is an arithmetic number, because the mean of its divisors is an integer number (251746770825).

Almost surely, 2^{5615106661665} is an apocalyptic number.

It is an amenable number.

5615106661665 is a deficient number, since it is larger than the sum of its proper divisors (4454764171335).

5615106661665 is a wasteful number, since it uses less digits than its factorization.

5615106661665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884623 (or 5884614 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 5615106661665 in words is "five trillion, six hundred fifteen billion, one hundred six million, six hundred sixty-one thousand, six hundred sixty-five".