86181698447 has 16 divisors (see below), whose sum is σ = 93111596928. Its totient is φ = 79295082240.

The previous prime is 86181698437. The next prime is 86181698507. The reversal of 86181698447 is 74489618168.

It is a cyclic number.

It is not a de Polignac number, because 86181698447 - 2⁴ = 86181698431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86181698447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86181698437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6677933 + ... + 6690825.

It is an arithmetic number, because the mean of its divisors is an integer number (5819474808).

Almost surely, 2^86181698447 is an apocalyptic number.

86181698447 is a deficient number, since it is larger than the sum of its proper divisors (6929898481).

86181698447 is a wasteful number, since it uses less digits than its factorization.

86181698447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14530.

The product of its digits is 18579456, while the sum is 62.

The spelling of 86181698447 in words is "eighty-six billion, one hundred eighty-one million, six hundred ninety-eight thousand, four hundred forty-seven".