1161324265253 has 8 divisors (see below), whose sum is σ = 1165489430040. Its totient is φ = 1157163356160.

The previous prime is 1161324265183. The next prime is 1161324265261. The reversal of 1161324265253 is 3525624231611.

It can be written as a sum of positive squares in 4 ways, for example, as 73020469729 + 1088303795524 = 270223^2 + 1043218^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1161324265253 - 2¹² = 1161324261157 is a prime.

It is a Duffinian number.

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 1161324265253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161324225253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516668 + ... + 1609221.

It is an arithmetic number, because the mean of its divisors is an integer number (145686178755).

Almost surely, 2^{1161324265253} is an apocalyptic number.

It is an amenable number.

1161324265253 is a deficient number, since it is larger than the sum of its proper divisors (4165164787).

1161324265253 is a wasteful number, since it uses less digits than its factorization.

1161324265253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127847.

The product of its digits is 259200, while the sum is 41.

Adding to 1161324265253 its reverse (3525624231611), we get a palindrome (4686948496864).

The spelling of 1161324265253 in words is "one trillion, one hundred sixty-one billion, three hundred twenty-four million, two hundred sixty-five thousand, two hundred fifty-three".