878765676788 has 12 divisors (see below), whose sum is σ = 1537849844580. Its totient is φ = 439380006912.

The previous prime is 878765676787. The next prime is 878765676809. The reversal of 878765676788 is 887676567878.

It can be written as a sum of positive squares in 2 ways, for example, as 582294138724 + 296471538064 = 763082^2 + 544492^2 .

It is a super-2 number, since 2×878765676788² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878765676781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90470 + ... + 1328802.

It is an arithmetic number, because the mean of its divisors is an integer number (128154153715).

Almost surely, 2^878765676788 is an apocalyptic number.

It is an amenable number.

878765676788 is a deficient number, since it is larger than the sum of its proper divisors (659084167792).

878765676788 is a wasteful number, since it uses less digits than its factorization.

878765676788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415746 (or 1415744 counting only the distinct ones).

The product of its digits is 10621255680, while the sum is 83.

The spelling of 878765676788 in words is "eight hundred seventy-eight billion, seven hundred sixty-five million, six hundred seventy-six thousand, seven hundred eighty-eight".