78478043577600 has 432 divisors, whose sum is σ = 277558730854272. Its totient is φ = 19476567982080.

The previous prime is 78478043577559. The next prime is 78478043577607. The reversal of 78478043577600 is 677534087487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78478043577607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13937674 + ... + 18740726.

Almost surely, 2^{78478043577600} 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 78478043577600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138779365427136).

78478043577600 is an abundant number, since it is smaller than the sum of its proper divisors (199080687276672).

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

78478043577600 is a wasteful number, since it uses less digits than its factorization.

78478043577600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803142 (or 4803123 counting only the distinct ones).

The product of its (nonzero) digits is 221276160, while the sum is 66.

The spelling of 78478043577600 in words is "seventy-eight trillion, four hundred seventy-eight billion, forty-three million, five hundred seventy-seven thousand, six hundred".