11886686705 has 16 divisors (see below), whose sum is σ = 15117328080. Its totient is φ = 8941535232.

The previous prime is 11886686699. The next prime is 11886686761. The reversal of 11886686705 is 50768668811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1257695296 + 10628991409 = 35464^2 + 103097^2 .

It is a cyclic number.

It is not a de Polignac number, because 11886686705 - 2⁴ = 11886686689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25457 + ... + 156273.

It is an arithmetic number, because the mean of its divisors is an integer number (944833005).

Almost surely, 2^11886686705 is an apocalyptic number.

It is an amenable number.

11886686705 is a deficient number, since it is larger than the sum of its proper divisors (3230641375).

11886686705 is a wasteful number, since it uses less digits than its factorization.

11886686705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131908.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 11886686705 in words is "eleven billion, eight hundred eighty-six million, six hundred eighty-six thousand, seven hundred five".