1165063111213 has 8 divisors (see below), whose sum is σ = 1233606543480. Its totient is φ = 1096520824320.

The previous prime is 1165063111211. The next prime is 1165063111249. The reversal of 1165063111213 is 3121113605611.

It can be written as a sum of positive squares in 4 ways, for example, as 936482404 + 1164126628809 = 30602^2 + 1078947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1165063111213 - 2¹ = 1165063111211 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 (1165063111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2694633 + ... + 3096961.

It is an arithmetic number, because the mean of its divisors is an integer number (154200817935).

Almost surely, 2^{1165063111213} is an apocalyptic number.

It is an amenable number.

1165063111213 is a deficient number, since it is larger than the sum of its proper divisors (68543432267).

1165063111213 is a wasteful number, since it uses less digits than its factorization.

1165063111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572687.

The product of its (nonzero) digits is 3240, while the sum is 31.

Adding to 1165063111213 its reverse (3121113605611), we get a palindrome (4286176716824).

The spelling of 1165063111213 in words is "one trillion, one hundred sixty-five billion, sixty-three million, one hundred eleven thousand, two hundred thirteen".