8320863336391 has 2 divisors, whose sum is σ = 8320863336392. Its totient is φ = 8320863336390.

The previous prime is 8320863336371. The next prime is 8320863336433. The reversal of 8320863336391 is 1936333680238.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8320863336391 - 2³¹ = 8318715852743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8320863336341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160431668195 + 4160431668196.

It is an arithmetic number, because the mean of its divisors is an integer number (4160431668196).

Almost surely, 2^{8320863336391} is an apocalyptic number.

8320863336391 is a deficient number, since it is larger than the sum of its proper divisors (1).

8320863336391 is an equidigital number, since it uses as much as digits as its factorization.

8320863336391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 8320863336391 in words is "eight trillion, three hundred twenty billion, eight hundred sixty-three million, three hundred thirty-six thousand, three hundred ninety-one".