11155505078 has 8 divisors (see below), whose sum is σ = 16765376760. Its totient is φ = 5567046160.

The previous prime is 11155505071. The next prime is 11155505083. The reversal of 11155505078 is 87050555111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×11155505078³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155505071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5351888 + ... + 5353971.

It is an arithmetic number, because the mean of its divisors is an integer number (2095672095).

Almost surely, 2^11155505078 is an apocalyptic number.

11155505078 is a deficient number, since it is larger than the sum of its proper divisors (5609871682).

11155505078 is a wasteful number, since it uses less digits than its factorization.

11155505078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706382.

The product of its (nonzero) digits is 35000, while the sum is 38.

The spelling of 11155505078 in words is "eleven billion, one hundred fifty-five million, five hundred five thousand, seventy-eight".