11178458155 has 4 divisors (see below), whose sum is σ = 13414149792. Its totient is φ = 8942766520.

The previous prime is 11178458131. The next prime is 11178458197. The reversal of 11178458155 is 55185487111.

11178458155 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.

It is not a de Polignac number, because 11178458155 - 2⁹ = 11178457643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1117845811 + ... + 1117845820.

It is an arithmetic number, because the mean of its divisors is an integer number (3353537448).

Almost surely, 2^11178458155 is an apocalyptic number.

11178458155 is a deficient number, since it is larger than the sum of its proper divisors (2235691637).

11178458155 is an equidigital number, since it uses as much as digits as its factorization.

11178458155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235691636.

The product of its digits is 224000, while the sum is 46.

The spelling of 11178458155 in words is "eleven billion, one hundred seventy-eight million, four hundred fifty-eight thousand, one hundred fifty-five".