11660111601 has 16 divisors (see below), whose sum is σ = 15794128896. Its totient is φ = 7650678096.

The previous prime is 11660111591. The next prime is 11660111611. The reversal of 11660111601 is 10611106611.

It is an interprime number because it is at equal distance from previous prime (11660111591) and next prime (11660111611).

It is not a de Polignac number, because 11660111601 - 2⁶ = 11660111537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11660111611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65385 + ... + 166118.

It is an arithmetic number, because the mean of its divisors is an integer number (987133056).

Almost surely, 2^11660111601 is an apocalyptic number.

It is an amenable number.

11660111601 is a deficient number, since it is larger than the sum of its proper divisors (4134017295).

11660111601 is a wasteful number, since it uses less digits than its factorization.

11660111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231772.

The product of its (nonzero) digits is 216, while the sum is 24.

The spelling of 11660111601 in words is "eleven billion, six hundred sixty million, one hundred eleven thousand, six hundred one".