86221863687586 has 8 divisors (see below), whose sum is σ = 141090322397904. Its totient is φ = 39191756221620.

The previous prime is 86221863687581. The next prime is 86221863687599. The reversal of 86221863687586 is 68578636812268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×86221863687586² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86221863687581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959587811060 + ... + 1959587811103.

It is an arithmetic number, because the mean of its divisors is an integer number (17636290299738).

Almost surely, 2^{86221863687586} is an apocalyptic number.

86221863687586 is a deficient number, since it is larger than the sum of its proper divisors (54868458710318).

86221863687586 is a wasteful number, since it uses less digits than its factorization.

86221863687586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919175622176.

The product of its digits is 2229534720, while the sum is 76.

The spelling of 86221863687586 in words is "eighty-six trillion, two hundred twenty-one billion, eight hundred sixty-three million, six hundred eighty-seven thousand, five hundred eighty-six".