86407443681 has 12 divisors (see below), whose sum is σ = 124753943088. Its totient is φ = 53173811184.

The previous prime is 86407443677. The next prime is 86407443691. The reversal of 86407443681 is 18634470468.

It is not a de Polignac number, because 86407443681 - 2² = 86407443677 is a prime.

It is a super-2 number, since 2×86407443681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86407443641) 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 11 ways as a sum of consecutive naturals, for example, 85213935 + ... + 85214948.

It is an arithmetic number, because the mean of its divisors is an integer number (10396161924).

Almost surely, 2^86407443681 is an apocalyptic number.

It is an amenable number.

86407443681 is a deficient number, since it is larger than the sum of its proper divisors (38346499407).

86407443681 is a wasteful number, since it uses less digits than its factorization.

86407443681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170428912 (or 170428899 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 86407443681 in words is "eighty-six billion, four hundred seven million, four hundred forty-three thousand, six hundred eighty-one".