86728800643 has 16 divisors (see below), whose sum is σ = 90179473824. Its totient is φ = 83342649600.

The previous prime is 86728800611. The next prime is 86728800713. The reversal of 86728800643 is 34600882768.

It is a cyclic number.

It is not a de Polignac number, because 86728800643 - 2⁵ = 86728800611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86728800043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955168 + ... + 1042018.

It is an arithmetic number, because the mean of its divisors is an integer number (5636217114).

Almost surely, 2^86728800643 is an apocalyptic number.

86728800643 is a deficient number, since it is larger than the sum of its proper divisors (3450673181).

86728800643 is a wasteful number, since it uses less digits than its factorization.

86728800643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87222.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 86728800643 in words is "eighty-six billion, seven hundred twenty-eight million, eight hundred thousand, six hundred forty-three".