11615613065 has 16 divisors (see below), whose sum is σ = 16622592768. Its totient is φ = 7618687296.

The previous prime is 11615613059. The next prime is 11615613067. The reversal of 11615613065 is 56031651611.

It is a cyclic number.

It is not a de Polignac number, because 11615613065 - 2¹² = 11615608969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11615613067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7213862 + ... + 7215471.

It is an arithmetic number, because the mean of its divisors is an integer number (1038912048).

Almost surely, 2^11615613065 is an apocalyptic number.

It is an amenable number.

11615613065 is a deficient number, since it is larger than the sum of its proper divisors (5006979703).

11615613065 is a wasteful number, since it uses less digits than its factorization.

11615613065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429368.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 11615613065 in words is "eleven billion, six hundred fifteen million, six hundred thirteen thousand, sixty-five".