11678515187 has 2 divisors, whose sum is σ = 11678515188. Its totient is φ = 11678515186.

The previous prime is 11678515183. The next prime is 11678515217. The reversal of 11678515187 is 78151587611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11678515187 - 2² = 11678515183 is a prime.

It is not a weakly prime, because it can be changed into another prime (11678515183) 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 as a sum of consecutive naturals, namely, 5839257593 + 5839257594.

It is an arithmetic number, because the mean of its divisors is an integer number (5839257594).

Almost surely, 2^11678515187 is an apocalyptic number.

11678515187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11678515187 is an equidigital number, since it uses as much as digits as its factorization.

11678515187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 50.

The spelling of 11678515187 in words is "eleven billion, six hundred seventy-eight million, five hundred fifteen thousand, one hundred eighty-seven".