86421230081 has 4 divisors (see below), whose sum is σ = 86435137092. Its totient is φ = 86407323072.

The previous prime is 86421230069. The next prime is 86421230083. The reversal of 86421230081 is 18003212468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79645306225 + 6775923856 = 282215^2 + 82316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86421230081 is a prime.

It is a super-2 number, since 2×86421230081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86421230083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6944180 + ... + 6956613.

It is an arithmetic number, because the mean of its divisors is an integer number (21608784273).

Almost surely, 2^86421230081 is an apocalyptic number.

It is an amenable number.

86421230081 is a deficient number, since it is larger than the sum of its proper divisors (13907011).

86421230081 is a wasteful number, since it uses less digits than its factorization.

86421230081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13907010.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 86421230081 in words is "eighty-six billion, four hundred twenty-one million, two hundred thirty thousand, eighty-one".