878808807766684 has 12 divisors (see below), whose sum is σ = 1560869374989064. Its totient is φ = 432846129198384.

The previous prime is 878808807766651. The next prime is 878808807766693. The reversal of 878808807766684 is 486667708808878.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639568670939 + ... + 1639568671474.

Almost surely, 2^{878808807766684} is an apocalyptic number.

It is an amenable number.

878808807766684 is a deficient number, since it is larger than the sum of its proper divisors (682060567222380).

878808807766684 is a wasteful number, since it uses less digits than its factorization.

878808807766684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279137342484 (or 3279137342482 counting only the distinct ones).

The product of its (nonzero) digits is 77686898688, while the sum is 91.

The spelling of 878808807766684 in words is "eight hundred seventy-eight trillion, eight hundred eight billion, eight hundred seven million, seven hundred sixty-six thousand, six hundred eighty-four".