8619078021871 has 2 divisors, whose sum is σ = 8619078021872. Its totient is φ = 8619078021870.

The previous prime is 8619078021803. The next prime is 8619078021907. The reversal of 8619078021871 is 1781208709168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8619078021871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8619078021371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4309539010935 + 4309539010936.

It is an arithmetic number, because the mean of its divisors is an integer number (4309539010936).

Almost surely, 2^{8619078021871} is an apocalyptic number.

8619078021871 is a deficient number, since it is larger than the sum of its proper divisors (1).

8619078021871 is an equidigital number, since it uses as much as digits as its factorization.

8619078021871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 58.

The spelling of 8619078021871 in words is "eight trillion, six hundred nineteen billion, seventy-eight million, twenty-one thousand, eight hundred seventy-one".