7720777423 has 2 divisors, whose sum is σ = 7720777424. Its totient is φ = 7720777422.

The previous prime is 7720777411. The next prime is 7720777439. The reversal of 7720777423 is 3247770277.

It is a weak prime.

It is an emirp because it is prime and its reverse (3247770277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7720777423 - 2⁵ = 7720777391 is a prime.

It is a super-2 number, since 2×7720777423² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7720777453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3860388711 + 3860388712.

It is an arithmetic number, because the mean of its divisors is an integer number (3860388712).

Almost surely, 2^7720777423 is an apocalyptic number.

7720777423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7720777423 is an equidigital number, since it uses as much as digits as its factorization.

7720777423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806736, while the sum is 46.

The square root of 7720777423 is about 87867.9544714682. The cubic root of 7720777423 is about 1976.4553646536.

The spelling of 7720777423 in words is "seven billion, seven hundred twenty million, seven hundred seventy-seven thousand, four hundred twenty-three".