78868858896 has 225 divisors, whose sum is σ = 237294265351. Its totient is φ = 25288720128.

The previous prime is 78868858879. The next prime is 78868858919. The reversal of 78868858896 is 69885886887.

The square root of 78868858896 is 280836.

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

It can be written as a sum of positive squares in 4 ways, for example, as 18234721296 + 60634137600 = 135036^2 + 246240^2 .

It is a super-3 number, since 3×78868858896³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 293192650 + ... + 293192918.

Almost surely, 2^78868858896 is an apocalyptic number.

78868858896 is the 280836-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78868858896

78868858896 is an abundant number, since it is smaller than the sum of its proper divisors (158425406455).

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

78868858896 is an equidigital number, since it uses as much as digits as its factorization.

78868858896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 303 counting only the distinct ones).

The product of its digits is 2972712960, while the sum is 81.

Multiplying 78868858896 by its sum of digits (81), we get a square (6388377570576 = 2527524²).

78868858896 divided by its sum of digits (81) gives a square (973689616 = 31204²).

The spelling of 78868858896 in words is "seventy-eight billion, eight hundred sixty-eight million, eight hundred fifty-eight thousand, eight hundred ninety-six".