78547025880976 has 15 divisors (see below), whose sum is σ = 152184931330161. Its totient is φ = 39273495215136.

The previous prime is 78547025880971. The next prime is 78547025880977. The reversal of 78547025880976 is 67908852074587.

The square root of 78547025880976 is 8862676.

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., 51195799455376 + 27351226425600 = 7155124^2 + 5229840^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78547025880971) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34342870 + ... + 36558538.

Almost surely, 2^{78547025880976} is an apocalyptic number.

78547025880976 is the 8862676-th square number.

It is an amenable number.

78547025880976 is a deficient number, since it is larger than the sum of its proper divisors (73637905449185).

78547025880976 is an frugal number, since it uses more digits than its factorization.

78547025880976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431346 (or 2215671 counting only the distinct ones).

The product of its (nonzero) digits is 1896652800, while the sum is 76.

The spelling of 78547025880976 in words is "seventy-eight trillion, five hundred forty-seven billion, twenty-five million, eight hundred eighty thousand, nine hundred seventy-six".