2578768277 has 2 divisors, whose sum is σ = 2578768278. Its totient is φ = 2578768276.

The previous prime is 2578768271. The next prime is 2578768279. The reversal of 2578768277 is 7728678752.

2578768277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2576476081 + 2292196 = 50759^2 + 1514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2578768277 is a prime.

Together with 2578768279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578768271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289384138 + 1289384139.

It is an arithmetic number, because the mean of its divisors is an integer number (1289384139).

Almost surely, 2^2578768277 is an apocalyptic number.

It is an amenable number.

2578768277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578768277 is an equidigital number, since it uses as much as digits as its factorization.

2578768277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18439680, while the sum is 59.

The square root of 2578768277 is about 50781.5741878883. The cubic root of 2578768277 is about 1371.3156730656.

The spelling of 2578768277 in words is "two billion, five hundred seventy-eight million, seven hundred sixty-eight thousand, two hundred seventy-seven".