86012988209 has 4 divisors (see below), whose sum is σ = 88337663604. Its totient is φ = 83688312816.

The previous prime is 86012988199. The next prime is 86012988223. The reversal of 86012988209 is 90288921068.

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 80928870400 + 5084117809 = 284480^2 + 71303^2 .

It is a cyclic number.

It is not a de Polignac number, because 86012988209 - 2⁸ = 86012987953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86012987209) 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, 1162337642 + ... + 1162337715.

It is an arithmetic number, because the mean of its divisors is an integer number (22084415901).

Almost surely, 2^86012988209 is an apocalyptic number.

It is an amenable number.

86012988209 is a deficient number, since it is larger than the sum of its proper divisors (2324675395).

86012988209 is a wasteful number, since it uses less digits than its factorization.

86012988209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324675394.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 86012988209 in words is "eighty-six billion, twelve million, nine hundred eighty-eight thousand, two hundred nine".