78533447132250 has 384 divisors, whose sum is σ = 244120996454400. Its totient is φ = 18016493040000.

The previous prime is 78533447132227. The next prime is 78533447132297. The reversal of 78533447132250 is 5223174433587.

It is a happy number.

78533447132250 is a `hidden beast` number, since 7 + 8 + 5 + 3 + 344 + 71 + 3 + 225 + 0 = 666.

78533447132250 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 428306091 + ... + 428489409.

It is an arithmetic number, because the mean of its divisors is an integer number (635731761600).

Almost surely, 2^{78533447132250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78533447132250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122060498227200).

78533447132250 is an abundant number, since it is smaller than the sum of its proper divisors (165587549322150).

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

78533447132250 is a wasteful number, since it uses less digits than its factorization.

78533447132250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184283 (or 184270 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 78533447132250 in words is "seventy-eight trillion, five hundred thirty-three billion, four hundred forty-seven million, one hundred thirty-two thousand, two hundred fifty".