878168221585064 has 16 divisors (see below), whose sum is σ = 1684857634437120. Its totient is φ = 428872852401840.

The previous prime is 878168221585049. The next prime is 878168221585121. The reversal of 878168221585064 is 460585122861878.

878168221585064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276407298472 + ... + 1276407299159.

It is an arithmetic number, because the mean of its divisors is an integer number (105303602152320).

Almost surely, 2^{878168221585064} is an apocalyptic number.

It is an amenable number.

878168221585064 is a deficient number, since it is larger than the sum of its proper divisors (806689412852056).

878168221585064 is a wasteful number, since it uses less digits than its factorization.

878168221585064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552814597680 (or 2552814597676 counting only the distinct ones).

The product of its (nonzero) digits is 412876800, while the sum is 71.

The spelling of 878168221585064 in words is "eight hundred seventy-eight trillion, one hundred sixty-eight billion, two hundred twenty-one million, five hundred eighty-five thousand, sixty-four".