8219878656 has 144 divisors (see below), whose sum is σ = 24636315648. Its totient is φ = 2410444800.

The previous prime is 8219878603. The next prime is 8219878661. The reversal of 8219878656 is 6568789128.

It is a super-4 number, since 4×8219878656⁴ (a number of 41 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8219878656.

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, 246195 + ... + 277581.

Almost surely, 2^8219878656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8219878656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12318157824).

8219878656 is an abundant number, since it is smaller than the sum of its proper divisors (16416436992).

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

8219878656 is a wasteful number, since it uses less digits than its factorization.

8219878656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31448 (or 31434 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The square root of 8219878656 is about 90663.5464561143. The cubic root of 8219878656 is about 2018.1578683422.

The spelling of 8219878656 in words is "eight billion, two hundred nineteen million, eight hundred seventy-eight thousand, six hundred fifty-six".