1166116500555 has 16 divisors (see below), whose sum is σ = 1909176783360. Its totient is φ = 607465339488.

The previous prime is 1166116500487. The next prime is 1166116500587. The reversal of 1166116500555 is 5550056116611.

It is not a de Polignac number, because 1166116500555 - 2¹⁵ = 1166116467787 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, 903965635 + ... + 903966924.

It is an arithmetic number, because the mean of its divisors is an integer number (119323548960).

Almost surely, 2^{1166116500555} is an apocalyptic number.

1166116500555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166116500555 is a deficient number, since it is larger than the sum of its proper divisors (743060282805).

1166116500555 is a wasteful number, since it uses less digits than its factorization.

1166116500555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807932610.

The product of its (nonzero) digits is 135000, while the sum is 42.

It can be divided in two parts, 116611 and 6500555, that added together give a palindrome (6617166).

The spelling of 1166116500555 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, five hundred thousand, five hundred fifty-five".