7879867811 has 2 divisors, whose sum is σ = 7879867812. Its totient is φ = 7879867810.

The previous prime is 7879867799. The next prime is 7879867819. The reversal of 7879867811 is 1187689787.

7879867811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1187689787) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7879867811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (7879867819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939933905 + 3939933906.

It is an arithmetic number, because the mean of its divisors is an integer number (3939933906).

Almost surely, 2^7879867811 is an apocalyptic number.

7879867811 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879867811 is an equidigital number, since it uses as much as digits as its factorization.

7879867811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 62.

The square root of 7879867811 is about 88768.6195172596. The cubic root of 7879867811 is about 1989.9384517550.

The spelling of 7879867811 in words is "seven billion, eight hundred seventy-nine million, eight hundred sixty-seven thousand, eight hundred eleven".