86391667643905 has 16 divisors (see below), whose sum is σ = 117520649104320. Its totient is φ = 60439190966208.

The previous prime is 86391667643899. The next prime is 86391667643909. The reversal of 86391667643905 is 50934676619368.

It is a cyclic number.

It is not a de Polignac number, because 86391667643905 - 2¹⁷ = 86391667512833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86391667643909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34976382427 + ... + 34976384896.

It is an arithmetic number, because the mean of its divisors is an integer number (7345040569020).

Almost surely, 2^{86391667643905} is an apocalyptic number.

It is an amenable number.

86391667643905 is a deficient number, since it is larger than the sum of its proper divisors (31128981460415).

86391667643905 is a wasteful number, since it uses less digits than its factorization.

86391667643905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69952767360.

The product of its (nonzero) digits is 1058158080, while the sum is 73.

The spelling of 86391667643905 in words is "eighty-six trillion, three hundred ninety-one billion, six hundred sixty-seven million, six hundred forty-three thousand, nine hundred five".