11581117506386 has 32 divisors (see below), whose sum is σ = 18856087417728. Its totient is φ = 5313355004160.

The previous prime is 11581117506379. The next prime is 11581117506397. The reversal of 11581117506386 is 68360571118511.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6530150 + ... + 8112033.

It is an arithmetic number, because the mean of its divisors is an integer number (589252731804).

Almost surely, 2^{11581117506386} is an apocalyptic number.

11581117506386 is a deficient number, since it is larger than the sum of its proper divisors (7274969911342).

11581117506386 is a wasteful number, since it uses less digits than its factorization.

11581117506386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14642786.

The product of its (nonzero) digits is 1209600, while the sum is 53.

The spelling of 11581117506386 in words is "eleven trillion, five hundred eighty-one billion, one hundred seventeen million, five hundred six thousand, three hundred eighty-six".