7716774979 has 2 divisors, whose sum is σ = 7716774980. Its totient is φ = 7716774978.

The previous prime is 7716774973. The next prime is 7716775061. The reversal of 7716774979 is 9794776177.

7716774979 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (9794776177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7716774979 - 2⁹ = 7716774467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7716774979.

It is not a weakly prime, because it can be changed into another prime (7716774973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3858387489 + 3858387490.

It is an arithmetic number, because the mean of its divisors is an integer number (3858387490).

Almost surely, 2^7716774979 is an apocalyptic number.

7716774979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7716774979 is an equidigital number, since it uses as much as digits as its factorization.

7716774979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32672808, while the sum is 64.

The square root of 7716774979 is about 87845.1761851497. The cubic root of 7716774979 is about 1976.1137747319.

The spelling of 7716774979 in words is "seven billion, seven hundred sixteen million, seven hundred seventy-four thousand, nine hundred seventy-nine".