1113121646773 has 4 divisors (see below), whose sum is σ = 1113243534988. Its totient is φ = 1112999758560.

The previous prime is 1113121646761. The next prime is 1113121646779. The reversal of 1113121646773 is 3776461213111.

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 569387958084 + 543733688689 = 754578^2 + 737383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113121646773 - 2⁹ = 1113121646261 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 (1113121646779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60930408 + ... + 60948673.

It is an arithmetic number, because the mean of its divisors is an integer number (278310883747).

Almost surely, 2^{1113121646773} is an apocalyptic number.

It is an amenable number.

1113121646773 is a deficient number, since it is larger than the sum of its proper divisors (121888215).

1113121646773 is an equidigital number, since it uses as much as digits as its factorization.

1113121646773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121888214.

The product of its digits is 127008, while the sum is 43.

Adding to 1113121646773 its reverse (3776461213111), we get a palindrome (4889582859884).

The spelling of 1113121646773 in words is "one trillion, one hundred thirteen billion, one hundred twenty-one million, six hundred forty-six thousand, seven hundred seventy-three".