4247717878771 has 2 divisors, whose sum is σ = 4247717878772. Its totient is φ = 4247717878770.

The previous prime is 4247717878769. The next prime is 4247717878819. The reversal of 4247717878771 is 1778787177424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4247717878771 - 2¹ = 4247717878769 is a prime.

Together with 4247717878769, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4247717878771.

It is not a weakly prime, because it can be changed into another prime (4247717878711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2123858939385 + 2123858939386.

It is an arithmetic number, because the mean of its divisors is an integer number (2123858939386).

Almost surely, 2^{4247717878771} is an apocalyptic number.

4247717878771 is a deficient number, since it is larger than the sum of its proper divisors (1).

4247717878771 is an equidigital number, since it uses as much as digits as its factorization.

4247717878771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240945152, while the sum is 70.

The spelling of 4247717878771 in words is "four trillion, two hundred forty-seven billion, seven hundred seventeen million, eight hundred seventy-eight thousand, seven hundred seventy-one".