11886386578 has 16 divisors (see below), whose sum is σ = 19519190496. Its totient is φ = 5383808640.

The previous prime is 11886386573. The next prime is 11886386579. The reversal of 11886386578 is 87568368811.

It is not an unprimeable number, because it can be changed into a prime (11886386573) 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 7 ways as a sum of consecutive naturals, for example, 948351 + ... + 960802.

It is an arithmetic number, because the mean of its divisors is an integer number (1219949406).

Almost surely, 2^11886386578 is an apocalyptic number.

11886386578 is a deficient number, since it is larger than the sum of its proper divisors (7632803918).

11886386578 is a wasteful number, since it uses less digits than its factorization.

11886386578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909449.

The product of its digits is 15482880, while the sum is 61.

The spelling of 11886386578 in words is "eleven billion, eight hundred eighty-six million, three hundred eighty-six thousand, five hundred seventy-eight".