8400786181859 has 2 divisors, whose sum is σ = 8400786181860. Its totient is φ = 8400786181858.

The previous prime is 8400786181807. The next prime is 8400786181889. The reversal of 8400786181859 is 9581816870048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8400786181859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8400786181795 and 8400786181804.

It is not a weakly prime, because it can be changed into another prime (8400786181889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200393090929 + 4200393090930.

It is an arithmetic number, because the mean of its divisors is an integer number (4200393090930).

Almost surely, 2^{8400786181859} is an apocalyptic number.

8400786181859 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400786181859 is an equidigital number, since it uses as much as digits as its factorization.

8400786181859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30965760, while the sum is 65.

The spelling of 8400786181859 in words is "eight trillion, four hundred billion, seven hundred eighty-six million, one hundred eighty-one thousand, eight hundred fifty-nine".