86278776647646 has 32 divisors (see below), whose sum is σ = 191796388576128. Its totient is φ = 25651780363040.

The previous prime is 86278776647627. The next prime is 86278776647659. The reversal of 86278776647646 is 64674667787268.

It is a congruent 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, 12332583216 + ... + 12332590211.

It is an arithmetic number, because the mean of its divisors is an integer number (5993637143004).

Almost surely, 2^{86278776647646} is an apocalyptic number.

86278776647646 is an abundant number, since it is smaller than the sum of its proper divisors (105517611928482).

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

86278776647646 is a wasteful number, since it uses less digits than its factorization.

86278776647646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24665173496.

The product of its digits is 38236520448, while the sum is 84.

The spelling of 86278776647646 in words is "eighty-six trillion, two hundred seventy-eight billion, seven hundred seventy-six million, six hundred forty-seven thousand, six hundred forty-six".