86641031329 has 4 divisors (see below), whose sum is σ = 86663359620. Its totient is φ = 86618703040.

The previous prime is 86641031327. The next prime is 86641031381. The reversal of 86641031329 is 92313014668.

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 54451289104 + 32189742225 = 233348^2 + 179415^2 .

It is a cyclic number.

It is not a de Polignac number, because 86641031329 - 2¹ = 86641031327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86641031327) 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, 11158324 + ... + 11166085.

It is an arithmetic number, because the mean of its divisors is an integer number (21665839905).

Almost surely, 2^86641031329 is an apocalyptic number.

It is an amenable number.

86641031329 is a deficient number, since it is larger than the sum of its proper divisors (22328291).

86641031329 is a wasteful number, since it uses less digits than its factorization.

86641031329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22328290.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 86641031329 in words is "eighty-six billion, six hundred forty-one million, thirty-one thousand, three hundred twenty-nine".