86255884578666 has 32 divisors (see below), whose sum is σ = 188197702027776. Its totient is φ = 26137723958000.

The previous prime is 86255884578649. The next prime is 86255884578679. The reversal of 86255884578666 is 66687548855268.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6449700 + ... + 14632511.

It is an arithmetic number, because the mean of its divisors is an integer number (5881178188368).

Almost surely, 2^{86255884578666} is an apocalyptic number.

86255884578666 is an abundant number, since it is smaller than the sum of its proper divisors (101941817449110).

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

86255884578666 is a wasteful number, since it uses less digits than its factorization.

86255884578666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21144218.

The product of its digits is 37158912000, while the sum is 84.

The spelling of 86255884578666 in words is "eighty-six trillion, two hundred fifty-five billion, eight hundred eighty-four million, five hundred seventy-eight thousand, six hundred sixty-six".