11665711907 has 16 divisors (see below), whose sum is σ = 12079485600. Its totient is φ = 11257470720.

The previous prime is 11665711877. The next prime is 11665711921. The reversal of 11665711907 is 70911756611.

It is a happy number.

11665711907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11665711907 - 2¹² = 11665707811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11665711207) 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 15 ways as a sum of consecutive naturals, for example, 2736944 + ... + 2741202.

It is an arithmetic number, because the mean of its divisors is an integer number (754967850).

Almost surely, 2^11665711907 is an apocalyptic number.

11665711907 is a deficient number, since it is larger than the sum of its proper divisors (413773693).

11665711907 is a wasteful number, since it uses less digits than its factorization.

11665711907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886.

The product of its (nonzero) digits is 79380, while the sum is 44.

The spelling of 11665711907 in words is "eleven billion, six hundred sixty-five million, seven hundred eleven thousand, nine hundred seven".