1161552012311 has 8 divisors (see below), whose sum is σ = 1167493670400. Its totient is φ = 1155625008120.

The previous prime is 1161552012307. The next prime is 1161552012317. The reversal of 1161552012311 is 1132102551611.

It is a happy number.

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 1161552012311 - 2² = 1161552012307 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 (1161552012317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3504521 + ... + 3821618.

It is an arithmetic number, because the mean of its divisors is an integer number (145936708800).

Almost surely, 2^{1161552012311} is an apocalyptic number.

1161552012311 is a deficient number, since it is larger than the sum of its proper divisors (5941658089).

1161552012311 is an equidigital number, since it uses as much as digits as its factorization.

1161552012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326949.

The product of its (nonzero) digits is 1800, while the sum is 29.

Adding to 1161552012311 its reverse (1132102551611), we get a palindrome (2293654563922).

The spelling of 1161552012311 in words is "one trillion, one hundred sixty-one billion, five hundred fifty-two million, twelve thousand, three hundred eleven".