11210947778 has 8 divisors (see below), whose sum is σ = 16909330620. Its totient is φ = 5574504240.

The previous prime is 11210947729. The next prime is 11210947817. The reversal of 11210947778 is 87774901211.

11210947778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11203587409 + 7360369 = 105847^2 + 2713^2 .

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

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, 15484373 + ... + 15485096.

Almost surely, 2^11210947778 is an apocalyptic number.

11210947778 is a deficient number, since it is larger than the sum of its proper divisors (5698382842).

11210947778 is a wasteful number, since it uses less digits than its factorization.

11210947778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30969652.

The product of its (nonzero) digits is 197568, while the sum is 47.

The spelling of 11210947778 in words is "eleven billion, two hundred ten million, nine hundred forty-seven thousand, seven hundred seventy-eight".