1116085378661 has 16 divisors (see below), whose sum is σ = 1282922649600. Its totient is φ = 960251727600.

The previous prime is 1116085378627. The next prime is 1116085378669. The reversal of 1116085378661 is 1668735806111.

It is not a de Polignac number, because 1116085378661 - 2²² = 1116081184357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116085378669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2487191 + ... + 2901428.

It is an arithmetic number, because the mean of its divisors is an integer number (80182665600).

Almost surely, 2^{1116085378661} is an apocalyptic number.

1116085378661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116085378661 is a deficient number, since it is larger than the sum of its proper divisors (166837270939).

1116085378661 is a wasteful number, since it uses less digits than its factorization.

1116085378661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389640.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 1116085378661 in words is "one trillion, one hundred sixteen billion, eighty-five million, three hundred seventy-eight thousand, six hundred sixty-one".