7768827947 has 2 divisors, whose sum is σ = 7768827948. Its totient is φ = 7768827946.

The previous prime is 7768827919. The next prime is 7768827953. The reversal of 7768827947 is 7497288677.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7768827947 is a prime.

It is not a weakly prime, because it can be changed into another prime (7768827907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3884413973 + 3884413974.

It is an arithmetic number, because the mean of its divisors is an integer number (3884413974).

Almost surely, 2^7768827947 is an apocalyptic number.

7768827947 is a deficient number, since it is larger than the sum of its proper divisors (1).

7768827947 is an equidigital number, since it uses as much as digits as its factorization.

7768827947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66382848, while the sum is 65.

The square root of 7768827947 is about 88140.9549925572. The cubic root of 7768827947 is about 1980.5470673993.

The spelling of 7768827947 in words is "seven billion, seven hundred sixty-eight million, eight hundred twenty-seven thousand, nine hundred forty-seven".