866831465843222 has 32 divisors (see below), whose sum is σ = 1419592868838144. Its totient is φ = 393697271224800.

The previous prime is 866831465843129. The next prime is 866831465843249. The reversal of 866831465843222 is 222348564138668.

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, 981785108 + ... + 982667624.

It is an arithmetic number, because the mean of its divisors is an integer number (44362277151192).

Almost surely, 2^{866831465843222} is an apocalyptic number.

866831465843222 is a deficient number, since it is larger than the sum of its proper divisors (552761402994922).

866831465843222 is a wasteful number, since it uses less digits than its factorization.

866831465843222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918404.

The product of its digits is 637009920, while the sum is 68.

The spelling of 866831465843222 in words is "eight hundred sixty-six trillion, eight hundred thirty-one billion, four hundred sixty-five million, eight hundred forty-three thousand, two hundred twenty-two".