86221863140 has 72 divisors (see below), whose sum is σ = 210906295992. Its totient is φ = 29522680320.

The previous prime is 86221863137. The next prime is 86221863163. The reversal of 86221863140 is 4136812268.

It can be written as a sum of positive squares in 4 ways, for example, as 4806371584 + 81415491556 = 69328^2 + 285334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 687974 + ... + 803586.

It is an arithmetic number, because the mean of its divisors is an integer number (2929254111).

Almost surely, 2^86221863140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86221863140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105453147996).

86221863140 is an abundant number, since it is smaller than the sum of its proper divisors (124684432852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86221863140 is a wasteful number, since it uses less digits than its factorization.

86221863140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116397 (or 116388 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 86221863140 in words is "eighty-six billion, two hundred twenty-one million, eight hundred sixty-three thousand, one hundred forty".