86668424399 has 4 divisors (see below), whose sum is σ = 91229920440. Its totient is φ = 82106928360.

The previous prime is 86668424371. The next prime is 86668424419. The reversal of 86668424399 is 99342486668.

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

It is a cyclic number.

It is not a de Polignac number, because 86668424399 - 2¹² = 86668420303 is a prime.

It is a super-2 number, since 2×86668424399² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668424309) 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, 2280747992 + ... + 2280748029.

It is an arithmetic number, because the mean of its divisors is an integer number (22807480110).

Almost surely, 2^86668424399 is an apocalyptic number.

86668424399 is a deficient number, since it is larger than the sum of its proper divisors (4561496041).

86668424399 is a wasteful number, since it uses less digits than its factorization.

86668424399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561496040.

The product of its digits is 107495424, while the sum is 65.

The spelling of 86668424399 in words is "eighty-six billion, six hundred sixty-eight million, four hundred twenty-four thousand, three hundred ninety-nine".