78873255552 has 256 divisors, whose sum is σ = 258225811200. Its totient is φ = 20771831808.

The previous prime is 78873255509. The next prime is 78873255553. The reversal of 78873255552 is 25555237887.

It is a junction number, because it is equal to n+sod(n) for n = 78873255492 and 78873255501.

It is not an unprimeable number, because it can be changed into a prime (78873255553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35257378 + ... + 35259614.

It is an arithmetic number, because the mean of its divisors is an integer number (1008694575).

Almost surely, 2^78873255552 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 78873255552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129112905600).

78873255552 is an abundant number, since it is smaller than the sum of its proper divisors (179352555648).

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

78873255552 is a wasteful number, since it uses less digits than its factorization.

78873255552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283 (or 3271 counting only the distinct ones).

The product of its digits is 23520000, while the sum is 57.

The spelling of 78873255552 in words is "seventy-eight billion, eight hundred seventy-three million, two hundred fifty-five thousand, five hundred fifty-two".