878505045796 has 27 divisors (see below), whose sum is σ = 1788411984849. Its totient is φ = 376496538768.

The previous prime is 878505045791. The next prime is 878505045799. The reversal of 878505045796 is 697540505878.

The square root of 878505045796 is 937286.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 831900871396 + 46604174400 = 912086^2 + 215880^2 .

It is a super-2 number, since 2×878505045796² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878505045791) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13088530 + ... + 13155478.

Almost surely, 2^878505045796 is an apocalyptic number.

878505045796 is the 937286-th square number.

It is an amenable number.

878505045796 is an abundant number, since it is smaller than the sum of its proper divisors (909906939053).

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

878505045796 is an frugal number, since it uses more digits than its factorization.

878505045796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133916 (or 66958 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 64.

Multiplying 878505045796 by its sum of digits (64), we get a square (56224322930944 = 7498288²).

The spelling of 878505045796 in words is "eight hundred seventy-eight billion, five hundred five million, forty-five thousand, seven hundred ninety-six".