86206244881 has 9 divisors (see below), whose sum is σ = 88093547049. Its totient is φ = 84358563444.

The previous prime is 86206244867. The next prime is 86206244893. The reversal of 86206244881 is 18844260268.

The square root of 86206244881 is 293609.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 86206244881 - 2⁵ = 86206244849 is a prime.

It is a super-2 number, since 2×86206244881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86206244581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13796500 + ... + 13802746.

Almost surely, 2^86206244881 is an apocalyptic number.

86206244881 is the 293609-th square number.

86206244881 is the 146805-th centered octagonal number.

It is an amenable number.

86206244881 is a deficient number, since it is larger than the sum of its proper divisors (1887302168).

86206244881 is an frugal number, since it uses more digits than its factorization.

86206244881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588 (or 6294 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 49.

Multiplying 86206244881 by its sum of digits (49), we get a square (4224105999169 = 2055263²).

The spelling of 86206244881 in words is "eighty-six billion, two hundred six million, two hundred forty-four thousand, eight hundred eighty-one".