11131262665 has 16 divisors (see below), whose sum is σ = 13473707328. Its totient is φ = 8827828416.

The previous prime is 11131262657. The next prime is 11131262677. The reversal of 11131262665 is 56626213111.

It is a cyclic number.

It is not a de Polignac number, because 11131262665 - 2³ = 11131262657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11131262665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306354 + ... + 340756.

It is an arithmetic number, because the mean of its divisors is an integer number (842106708).

Almost surely, 2^11131262665 is an apocalyptic number.

It is an amenable number.

11131262665 is a deficient number, since it is larger than the sum of its proper divisors (2342444663).

11131262665 is a wasteful number, since it uses less digits than its factorization.

11131262665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34968.

The product of its digits is 12960, while the sum is 34.

Adding to 11131262665 its reverse (56626213111), we get a palindrome (67757475776).

The spelling of 11131262665 in words is "eleven billion, one hundred thirty-one million, two hundred sixty-two thousand, six hundred sixty-five".