86608721216810 has 64 divisors (see below), whose sum is σ = 168078087586080. Its totient is φ = 31942352471040.

The previous prime is 86608721216803. The next prime is 86608721216827. The reversal of 86608721216810 is 1861212780668.

It can be written as a sum of positive squares in 16 ways, for example, as 10677295561 + 86598043921249 = 103331^2 + 9305807^2 .

It is a super-2 number, since 2×86608721216810² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508143164 + ... + 508313576.

Almost surely, 2^{86608721216810} is an apocalyptic number.

86608721216810 is a deficient number, since it is larger than the sum of its proper divisors (81469366369270).

86608721216810 is a wasteful number, since it uses less digits than its factorization.

86608721216810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174843.

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 86608721216810 in words is "eighty-six trillion, six hundred eight billion, seven hundred twenty-one million, two hundred sixteen thousand, eight hundred ten".