3806778728114 has 8 divisors (see below), whose sum is σ = 5817907112940. Its totient is φ = 1867476357136.

The previous prime is 3806778728111. The next prime is 3806778728153. The reversal of 3806778728114 is 4118278776083.

It can be written as a sum of positive squares in 2 ways, for example, as 3629691780625 + 177086947489 = 1905175^2 + 420817^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3806778728111) 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, 17956503329 + ... + 17956503540.

Almost surely, 2^{3806778728114} is an apocalyptic number.

3806778728114 is a deficient number, since it is larger than the sum of its proper divisors (2011128384826).

3806778728114 is a wasteful number, since it uses less digits than its factorization.

3806778728114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35913006924.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 3806778728114 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred fourteen".