86783369891 has 2 divisors, whose sum is σ = 86783369892. Its totient is φ = 86783369890.

The previous prime is 86783369879. The next prime is 86783369909. The reversal of 86783369891 is 19896338768.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86783369891 is a prime.

It is not a weakly prime, because it can be changed into another prime (86783369821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43391684945 + 43391684946.

It is an arithmetic number, because the mean of its divisors is an integer number (43391684946).

Almost surely, 2^86783369891 is an apocalyptic number.

86783369891 is a deficient number, since it is larger than the sum of its proper divisors (1).

86783369891 is an equidigital number, since it uses as much as digits as its factorization.

86783369891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 68.

The spelling of 86783369891 in words is "eighty-six billion, seven hundred eighty-three million, three hundred sixty-nine thousand, eight hundred ninety-one".