85867614818646 has 32 divisors (see below), whose sum is σ = 177378806707200. Its totient is φ = 27683022625440.

The previous prime is 85867614818611. The next prime is 85867614818701. The reversal of 85867614818646 is 64681841676858.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134747616 + ... + 135383363.

It is an arithmetic number, because the mean of its divisors is an integer number (5543087709600).

Almost surely, 2^{85867614818646} is an apocalyptic number.

85867614818646 is an abundant number, since it is smaller than the sum of its proper divisors (91511191888554).

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

85867614818646 is a wasteful number, since it uses less digits than its factorization.

85867614818646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270132724.

The product of its digits is 2972712960, while the sum is 78.

The spelling of 85867614818646 in words is "eighty-five trillion, eight hundred sixty-seven billion, six hundred fourteen million, eight hundred eighteen thousand, six hundred forty-six".