11030511155 has 16 divisors (see below), whose sum is σ = 13324215744. Its totient is φ = 8766074880.

The previous prime is 11030511131. The next prime is 11030511157. The reversal of 11030511155 is 55111503011.

11030511155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11030511155 - 2⁶ = 11030511091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11030511155.

It is not an unprimeable number, because it can be changed into a prime (11030511157) 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 15 ways as a sum of consecutive naturals, for example, 1801379 + ... + 1807491.

It is an arithmetic number, because the mean of its divisors is an integer number (832763484).

Almost surely, 2^11030511155 is an apocalyptic number.

11030511155 is a deficient number, since it is larger than the sum of its proper divisors (2293704589).

11030511155 is a wasteful number, since it uses less digits than its factorization.

11030511155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446.

The product of its (nonzero) digits is 375, while the sum is 23.

The spelling of 11030511155 in words is "eleven billion, thirty million, five hundred eleven thousand, one hundred fifty-five".