78667908484 has 135 divisors (see below), whose sum is σ = 162487548405. Its totient is φ = 33320786400.

The previous prime is 78667908469. The next prime is 78667908491. The reversal of 78667908484 is 48480976687.

The square root of 78667908484 is 280478.

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., 2558134084 + 76109774400 = 50578^2 + 275880^2 .

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, 1289637814 + ... + 1289637874.

Almost surely, 2^78667908484 is an apocalyptic number.

78667908484 is the 280478-th square number.

It is an amenable number.

78667908484 is an abundant number, since it is smaller than the sum of its proper divisors (83819639921).

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

78667908484 is an equidigital number, since it uses as much as digits as its factorization.

78667908484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 67.

The spelling of 78667908484 in words is "seventy-eight billion, six hundred sixty-seven million, nine hundred eight thousand, four hundred eighty-four".