7236165665 has 16 divisors (see below), whose sum is σ = 8956413648. Its totient is φ = 5608267776.

The previous prime is 7236165659. The next prime is 7236165679. The reversal of 7236165665 is 5665616327.

It can be written as a sum of positive squares in 8 ways, for example, as 145178401 + 7090987264 = 12049^2 + 84208^2 .

It is a cyclic number.

It is not a de Polignac number, because 7236165665 - 2⁴ = 7236165649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40832 + ... + 127041.

It is an arithmetic number, because the mean of its divisors is an integer number (559775853).

Almost surely, 2^7236165665 is an apocalyptic number.

It is an amenable number.

7236165665 is a deficient number, since it is larger than the sum of its proper divisors (1720247983).

7236165665 is a wasteful number, since it uses less digits than its factorization.

7236165665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168148.

The product of its digits is 1360800, while the sum is 47.

The square root of 7236165665 is about 85065.6550259857. The cubic root of 7236165665 is about 1934.2064788870.

The spelling of 7236165665 in words is "seven billion, two hundred thirty-six million, one hundred sixty-five thousand, six hundred sixty-five".