8185981605463 has 2 divisors, whose sum is σ = 8185981605464. Its totient is φ = 8185981605462.

The previous prime is 8185981605457. The next prime is 8185981605551. The reversal of 8185981605463 is 3645061895818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8185981605463 - 2³⁷ = 8048542651991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8185981605395 and 8185981605404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8185981605163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4092990802731 + 4092990802732.

It is an arithmetic number, because the mean of its divisors is an integer number (4092990802732).

Almost surely, 2^{8185981605463} is an apocalyptic number.

8185981605463 is a deficient number, since it is larger than the sum of its proper divisors (1).

8185981605463 is an equidigital number, since it uses as much as digits as its factorization.

8185981605463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 64.

The spelling of 8185981605463 in words is "eight trillion, one hundred eighty-five billion, nine hundred eighty-one million, six hundred five thousand, four hundred sixty-three".