1155426168511 has 4 divisors (see below), whose sum is σ = 1155654563800. Its totient is φ = 1155197773224.

The previous prime is 1155426168503. The next prime is 1155426168521. The reversal of 1155426168511 is 1158616245511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1155426168511 - 2³ = 1155426168503 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 (1155426168521) 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 3 ways as a sum of consecutive naturals, for example, 114190056 + ... + 114200173.

It is an arithmetic number, because the mean of its divisors is an integer number (288913640950).

Almost surely, 2^{1155426168511} is an apocalyptic number.

1155426168511 is a deficient number, since it is larger than the sum of its proper divisors (228395289).

1155426168511 is an equidigital number, since it uses as much as digits as its factorization.

1155426168511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228395288.

The product of its digits is 288000, while the sum is 46.

The spelling of 1155426168511 in words is "one trillion, one hundred fifty-five billion, four hundred twenty-six million, one hundred sixty-eight thousand, five hundred eleven".