11090668178 has 18 divisors (see below), whose sum is σ = 16810034709. Its totient is φ = 5487920032.

The previous prime is 11090668177. The next prime is 11090668217. The reversal of 11090668178 is 87186609011.

It can be written as a sum of positive squares in 2 ways, for example, as 7004518249 + 4086149929 = 83693^2 + 63923^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74467.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11090668177) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16829213 + ... + 16829871.

Almost surely, 2^11090668178 is an apocalyptic number.

11090668178 is a deficient number, since it is larger than the sum of its proper divisors (5719366531).

11090668178 is an frugal number, since it uses more digits than its factorization.

11090668178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 11090668178 in words is "eleven billion, ninety million, six hundred sixty-eight thousand, one hundred seventy-eight".