11660040265 has 16 divisors (see below), whose sum is σ = 14034400848. Its totient is φ = 9299842816.

The previous prime is 11660040263. The next prime is 11660040277. The reversal of 11660040265 is 56204006611.

It can be written as a sum of positive squares in 8 ways, for example, as 3276074169 + 8383966096 = 57237^2 + 91564^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660040265 - 2¹ = 11660040263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11660040263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2819139 + ... + 2823271.

It is an arithmetic number, because the mean of its divisors is an integer number (877150053).

Almost surely, 2^11660040265 is an apocalyptic number.

It is an amenable number.

11660040265 is a deficient number, since it is larger than the sum of its proper divisors (2374360583).

11660040265 is a wasteful number, since it uses less digits than its factorization.

11660040265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 11660040265 its reverse (56204006611), we get a palindrome (67864046876).

The spelling of 11660040265 in words is "eleven billion, six hundred sixty million, forty thousand, two hundred sixty-five".