11155364515 has 4 divisors (see below), whose sum is σ = 13386437424. Its totient is φ = 8924291608.

The previous prime is 11155364513. The next prime is 11155364537. The reversal of 11155364515 is 51546355111.

11155364515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51546355111 = 1447 ⋅35622913.

It is a cyclic number.

It is not a de Polignac number, because 11155364515 - 2¹ = 11155364513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155364513) 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 3 ways as a sum of consecutive naturals, for example, 1115536447 + ... + 1115536456.

It is an arithmetic number, because the mean of its divisors is an integer number (3346609356).

Almost surely, 2^11155364515 is an apocalyptic number.

11155364515 is a deficient number, since it is larger than the sum of its proper divisors (2231072909).

11155364515 is an equidigital number, since it uses as much as digits as its factorization.

11155364515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231072908.

The product of its digits is 45000, while the sum is 37.

The spelling of 11155364515 in words is "eleven billion, one hundred fifty-five million, three hundred sixty-four thousand, five hundred fifteen".