86943905567 has 2 divisors, whose sum is σ = 86943905568. Its totient is φ = 86943905566.

The previous prime is 86943905549. The next prime is 86943905623. The reversal of 86943905567 is 76550934968.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86943905567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86943905537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43471952783 + 43471952784.

It is an arithmetic number, because the mean of its divisors is an integer number (43471952784).

Almost surely, 2^86943905567 is an apocalyptic number.

86943905567 is a deficient number, since it is larger than the sum of its proper divisors (1).

86943905567 is an equidigital number, since it uses as much as digits as its factorization.

86943905567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 86943905567 in words is "eighty-six billion, nine hundred forty-three million, nine hundred five thousand, five hundred sixty-seven".