11006661320265 has 32 divisors (see below), whose sum is σ = 18978113105280. Its totient is φ = 5415010039296.

The previous prime is 11006661320261. The next prime is 11006661320293. The reversal of 11006661320265 is 56202316660011.

It is not a de Polignac number, because 11006661320265 - 2² = 11006661320261 is a prime.

It is a super-2 number, since 2×11006661320265² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (11006661320261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18741300 + ... + 19319669.

It is an arithmetic number, because the mean of its divisors is an integer number (593066034540).

Almost surely, 2^{11006661320265} is an apocalyptic number.

11006661320265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11006661320265 is a deficient number, since it is larger than the sum of its proper divisors (7971451785015).

11006661320265 is a wasteful number, since it uses less digits than its factorization.

11006661320265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38062473.

The product of its (nonzero) digits is 77760, while the sum is 39.

Adding to 11006661320265 its reverse (56202316660011), we get a palindrome (67208977980276).

The spelling of 11006661320265 in words is "eleven trillion, six billion, six hundred sixty-one million, three hundred twenty thousand, two hundred sixty-five".