78504366005850 has 288 divisors, whose sum is σ = 212420271286080. Its totient is φ = 19133274746880.

The previous prime is 78504366005773. The next prime is 78504366005861. The reversal of 78504366005850 is 5850066340587.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3108701824 + ... + 3108727076.

It is an arithmetic number, because the mean of its divisors is an integer number (737570386410).

Almost surely, 2^{78504366005850} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78504366005850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106210135643040).

78504366005850 is an abundant number, since it is smaller than the sum of its proper divisors (133915905280230).

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

78504366005850 is a wasteful number, since it uses less digits than its factorization.

78504366005850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26642 (or 26608 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 78504366005850 in words is "seventy-eight trillion, five hundred four billion, three hundred sixty-six million, five thousand, eight hundred fifty".