66081039463 has 2 divisors, whose sum is σ = 66081039464. Its totient is φ = 66081039462.

The previous prime is 66081039407. The next prime is 66081039467. The reversal of 66081039463 is 36493018066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66081039463 - 2¹⁷ = 66080908391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66081039467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33040519731 + 33040519732.

It is an arithmetic number, because the mean of its divisors is an integer number (33040519732).

Almost surely, 2^66081039463 is an apocalyptic number.

66081039463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66081039463 is an equidigital number, since it uses as much as digits as its factorization.

66081039463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 66081039463 in words is "sixty-six billion, eighty-one million, thirty-nine thousand, four hundred sixty-three".