86221884512656 has 20 divisors (see below), whose sum is σ = 176881660140492. Its totient is φ = 40575004476416.

The previous prime is 86221884512611. The next prime is 86221884512663. The reversal of 86221884512656 is 65621548812268.

It can be written as a sum of positive squares in 2 ways, for example, as 46863827552656 + 39358056960000 = 6845716^2 + 6273600^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158496110965 + ... + 158496111508.

Almost surely, 2^{86221884512656} is an apocalyptic number.

It is an amenable number.

86221884512656 is an abundant number, since it is smaller than the sum of its proper divisors (90659775627836).

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

86221884512656 is a wasteful number, since it uses less digits than its factorization.

86221884512656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316992222498 (or 316992222492 counting only the distinct ones).

The product of its digits is 88473600, while the sum is 64.

The spelling of 86221884512656 in words is "eighty-six trillion, two hundred twenty-one billion, eight hundred eighty-four million, five hundred twelve thousand, six hundred fifty-six".