1117218603285 has 12 divisors (see below), whose sum is σ = 1936512245772. Its totient is φ = 595849921728.

The previous prime is 1117218603283. The next prime is 1117218603301. The reversal of 1117218603285 is 5823068127111.

1117218603285 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 2 + 18 + 603 + 28 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 258273338436 + 858945264849 = 508206^2 + 926793^2 .

It is not a de Polignac number, because 1117218603285 - 2¹ = 1117218603283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 24827080073 = 1117218603285 / (1 + 1 + 1 + 7 + 2 + 1 + 8 + 6 + 0 + 3 + 2 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1117218603285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117218603283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12413539992 + ... + 12413540081.

It is an arithmetic number, because the mean of its divisors is an integer number (161376020481).

Almost surely, 2^{1117218603285} is an apocalyptic number.

1117218603285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1117218603285 is a deficient number, since it is larger than the sum of its proper divisors (819293642487).

1117218603285 is a wasteful number, since it uses less digits than its factorization.

1117218603285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24827080084 (or 24827080081 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 1117218603285 in words is "one trillion, one hundred seventeen billion, two hundred eighteen million, six hundred three thousand, two hundred eighty-five".