11695135661 has 16 divisors (see below), whose sum is σ = 13007288448. Its totient is φ = 10424731200.

The previous prime is 11695135643. The next prime is 11695135679. The reversal of 11695135661 is 16653159611.

It is an interprime number because it is at equal distance from previous prime (11695135643) and next prime (11695135679).

It is a cyclic number.

It is not a de Polignac number, because 11695135661 - 2⁶ = 11695135597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11695135061) by changing a digit.

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, 1071371 + ... + 1082231.

It is an arithmetic number, because the mean of its divisors is an integer number (812955528).

Almost surely, 2^11695135661 is an apocalyptic number.

11695135661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11695135661 is a deficient number, since it is larger than the sum of its proper divisors (1312152787).

11695135661 is a wasteful number, since it uses less digits than its factorization.

11695135661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772.

The product of its digits is 145800, while the sum is 44.

The spelling of 11695135661 in words is "eleven billion, six hundred ninety-five million, one hundred thirty-five thousand, six hundred sixty-one".