86861555071667 has 2 divisors, whose sum is σ = 86861555071668. Its totient is φ = 86861555071666.

The previous prime is 86861555071609. The next prime is 86861555071673. The reversal of 86861555071667 is 76617055516868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86861555071667 - 2¹⁴ = 86861555055283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86861555071667.

It is not a weakly prime, because it can be changed into another prime (86861555071567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43430777535833 + 43430777535834.

It is an arithmetic number, because the mean of its divisors is an integer number (43430777535834).

Almost surely, 2^{86861555071667} is an apocalyptic number.

86861555071667 is a deficient number, since it is larger than the sum of its proper divisors (1).

86861555071667 is an equidigital number, since it uses as much as digits as its factorization.

86861555071667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032000, while the sum is 71.

The spelling of 86861555071667 in words is "eighty-six trillion, eight hundred sixty-one billion, five hundred fifty-five million, seventy-one thousand, six hundred sixty-seven".