86163640909 has 4 divisors (see below), whose sum is σ = 87000181216. Its totient is φ = 85327100604.

The previous prime is 86163640903. The next prime is 86163640919. The reversal of 86163640909 is 90904636168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86163640909 - 2⁷ = 86163640781 is a prime.

It is a super-3 number, since 3×86163640909³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86163640903) 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, 418269999 + ... + 418270204.

It is an arithmetic number, because the mean of its divisors is an integer number (21750045304).

Almost surely, 2^86163640909 is an apocalyptic number.

It is an amenable number.

86163640909 is a deficient number, since it is larger than the sum of its proper divisors (836540307).

86163640909 is a wasteful number, since it uses less digits than its factorization.

86163640909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836540306.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 86163640909 in words is "eighty-six billion, one hundred sixty-three million, six hundred forty thousand, nine hundred nine".