10806327778 has 4 divisors (see below), whose sum is σ = 16209491670. Its totient is φ = 5403163888.

The previous prime is 10806327769. The next prime is 10806327793. The reversal of 10806327778 is 87772360801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87772360801 = 18433 ⋅4761697.

It can be written as a sum of positive squares in only one way, i.e., 5884884369 + 4921443409 = 76713^2 + 70153^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701581943 + ... + 2701581946.

Almost surely, 2^10806327778 is an apocalyptic number.

10806327778 is a deficient number, since it is larger than the sum of its proper divisors (5403163892).

10806327778 is an equidigital number, since it uses as much as digits as its factorization.

10806327778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403163891.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 10806327778 in words is "ten billion, eight hundred six million, three hundred twenty-seven thousand, seven hundred seventy-eight".