7778345093 has 2 divisors, whose sum is σ = 7778345094. Its totient is φ = 7778345092.

The previous prime is 7778345051. The next prime is 7778345111. The reversal of 7778345093 is 3905438777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5506678849 + 2271666244 = 74207^2 + 47662^2 .

It is a cyclic number.

It is not a de Polignac number, because 7778345093 - 2¹⁴ = 7778328709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7778345023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3889172546 + 3889172547.

It is an arithmetic number, because the mean of its divisors is an integer number (3889172547).

Almost surely, 2^7778345093 is an apocalyptic number.

It is an amenable number.

7778345093 is a deficient number, since it is larger than the sum of its proper divisors (1).

7778345093 is an equidigital number, since it uses as much as digits as its factorization.

7778345093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The square root of 7778345093 is about 88194.9266851558. The cubic root of 7778345093 is about 1981.3554889508.

The spelling of 7778345093 in words is "seven billion, seven hundred seventy-eight million, three hundred forty-five thousand, ninety-three".