86220320656 has 40 divisors (see below), whose sum is σ = 179117464320. Its totient is φ = 40060660224.

The previous prime is 86220320621. The next prime is 86220320663. The reversal of 86220320656 is 65602302268.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984756 + ... + 2027731.

It is an arithmetic number, because the mean of its divisors is an integer number (4477936608).

Almost surely, 2^86220320656 is an apocalyptic number.

It is an amenable number.

86220320656 is an abundant number, since it is smaller than the sum of its proper divisors (92897143664).

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

86220320656 is a wasteful number, since it uses less digits than its factorization.

86220320656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012591 (or 4012585 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 86220320656 in words is "eighty-six billion, two hundred twenty million, three hundred twenty thousand, six hundred fifty-six".