4778053236349 has 2 divisors, whose sum is σ = 4778053236350. Its totient is φ = 4778053236348.

The previous prime is 4778053236347. The next prime is 4778053236511. The reversal of 4778053236349 is 9436323508774.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4347037352025 + 431015884324 = 2084955^2 + 656518^2 .

It is a cyclic number.

It is not a de Polignac number, because 4778053236349 - 2¹ = 4778053236347 is a prime.

Together with 4778053236347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4778053236347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2389026618174 + 2389026618175.

It is an arithmetic number, because the mean of its divisors is an integer number (2389026618175).

Almost surely, 2^{4778053236349} is an apocalyptic number.

It is an amenable number.

4778053236349 is a deficient number, since it is larger than the sum of its proper divisors (1).

4778053236349 is an equidigital number, since it uses as much as digits as its factorization.

4778053236349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 61.

The spelling of 4778053236349 in words is "four trillion, seven hundred seventy-eight billion, fifty-three million, two hundred thirty-six thousand, three hundred forty-nine".