11699935871 has 16 divisors (see below), whose sum is σ = 13184658144. Its totient is φ = 10309762944.

The previous prime is 11699935813. The next prime is 11699935873. The reversal of 11699935871 is 17853999611.

It is not a de Polignac number, because 11699935871 - 2¹⁰ = 11699934847 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11699935871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11699935873) 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, 203981 + ... + 254966.

It is an arithmetic number, because the mean of its divisors is an integer number (824041134).

Almost surely, 2^11699935871 is an apocalyptic number.

11699935871 is a deficient number, since it is larger than the sum of its proper divisors (1484722273).

11699935871 is a wasteful number, since it uses less digits than its factorization.

11699935871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459050.

The product of its digits is 3674160, while the sum is 59.

The spelling of 11699935871 in words is "eleven billion, six hundred ninety-nine million, nine hundred thirty-five thousand, eight hundred seventy-one".