11006640111655 has 32 divisors (see below), whose sum is σ = 13813801444800. Its totient is φ = 8408228032512.

The previous prime is 11006640111653. The next prime is 11006640111673. The reversal of 11006640111655 is 55611104660011.

It is a cyclic number.

It is not a de Polignac number, because 11006640111655 - 2¹ = 11006640111653 is a prime.

It is a super-2 number, since 2×11006640111655² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11006640111653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20167156 + ... + 20705734.

It is an arithmetic number, because the mean of its divisors is an integer number (431681295150).

Almost surely, 2^{11006640111655} is an apocalyptic number.

11006640111655 is a deficient number, since it is larger than the sum of its proper divisors (2807161333145).

11006640111655 is a wasteful number, since it uses less digits than its factorization.

11006640111655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540163.

The product of its (nonzero) digits is 21600, while the sum is 37.

Adding to 11006640111655 its reverse (55611104660011), we get a palindrome (66617744771666).

The spelling of 11006640111655 in words is "eleven trillion, six billion, six hundred forty million, one hundred eleven thousand, six hundred fifty-five".