2778805055 has 8 divisors (see below), whose sum is σ = 3591071232. Its totient is φ = 2052040608.

The previous prime is 2778805037. The next prime is 2778805093. The reversal of 2778805055 is 5505088772.

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

It is a cyclic number.

It is not a de Polignac number, because 2778805055 - 2⁶ = 2778804991 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 21375359 + ... + 21375488.

It is an arithmetic number, because the mean of its divisors is an integer number (448883904).

Almost surely, 2^2778805055 is an apocalyptic number.

2778805055 is a deficient number, since it is larger than the sum of its proper divisors (812266177).

2778805055 is a wasteful number, since it uses less digits than its factorization.

2778805055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42750865.

The product of its (nonzero) digits is 784000, while the sum is 47.

The square root of 2778805055 is about 52714.3723760418. The cubic root of 2778805055 is about 1405.8943753120.

The spelling of 2778805055 in words is "two billion, seven hundred seventy-eight million, eight hundred five thousand, fifty-five".