2778077755 has 8 divisors (see below), whose sum is σ = 3334251024. Its totient is φ = 2222090400.

The previous prime is 2778077711. The next prime is 2778077777. The reversal of 2778077755 is 5577708772.

2778077755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2778077755 - 2¹⁷ = 2777946683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2778077696 and 2778077705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11161 + ... + 75370.

It is an arithmetic number, because the mean of its divisors is an integer number (416781378).

Almost surely, 2^2778077755 is an apocalyptic number.

2778077755 is a deficient number, since it is larger than the sum of its proper divisors (556173269).

2778077755 is an equidigital number, since it uses as much as digits as its factorization.

2778077755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92957.

The product of its (nonzero) digits is 6722800, while the sum is 55.

The square root of 2778077755 is about 52707.4734264506. The cubic root of 2778077755 is about 1405.7717091324.

The spelling of 2778077755 in words is "two billion, seven hundred seventy-eight million, seventy-seven thousand, seven hundred fifty-five".