86889820291 has 2 divisors, whose sum is σ = 86889820292. Its totient is φ = 86889820290.

The previous prime is 86889820267. The next prime is 86889820357. The reversal of 86889820291 is 19202898868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86889820291 - 2⁷ = 86889820163 is a prime.

It is not a weakly prime, because it can be changed into another prime (86889820201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43444910145 + 43444910146.

It is an arithmetic number, because the mean of its divisors is an integer number (43444910146).

Almost surely, 2^86889820291 is an apocalyptic number.

86889820291 is a deficient number, since it is larger than the sum of its proper divisors (1).

86889820291 is an equidigital number, since it uses as much as digits as its factorization.

86889820291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 61.

The spelling of 86889820291 in words is "eighty-six billion, eight hundred eighty-nine million, eight hundred twenty thousand, two hundred ninety-one".