1118204533805 has 4 divisors (see below), whose sum is σ = 1341845440572. Its totient is φ = 894563627040.

The previous prime is 1118204533799. The next prime is 1118204533891. The reversal of 1118204533805 is 5083354028111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176099408164 + 942105125641 = 419642^2 + 970621^2 .

It is not a de Polignac number, because 1118204533805 - 2⁶ = 1118204533741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111820453376 + ... + 111820453385.

It is an arithmetic number, because the mean of its divisors is an integer number (335461360143).

Almost surely, 2^{1118204533805} is an apocalyptic number.

It is an amenable number.

1118204533805 is a deficient number, since it is larger than the sum of its proper divisors (223640906767).

1118204533805 is an equidigital number, since it uses as much as digits as its factorization.

1118204533805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223640906766.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 1118204533805 in words is "one trillion, one hundred eighteen billion, two hundred four million, five hundred thirty-three thousand, eight hundred five".