86311788643 has 2 divisors, whose sum is σ = 86311788644. Its totient is φ = 86311788642.

The previous prime is 86311788631. The next prime is 86311788671. The reversal of 86311788643 is 34688711368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86311788643 - 2⁵ = 86311788611 is a prime.

It is not a weakly prime, because it can be changed into another prime (86311783643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43155894321 + 43155894322.

It is an arithmetic number, because the mean of its divisors is an integer number (43155894322).

Almost surely, 2^86311788643 is an apocalyptic number.

86311788643 is a deficient number, since it is larger than the sum of its proper divisors (1).

86311788643 is an equidigital number, since it uses as much as digits as its factorization.

86311788643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 55.

The spelling of 86311788643 in words is "eighty-six billion, three hundred eleven million, seven hundred eighty-eight thousand, six hundred forty-three".