78508179456 has 360 divisors, whose sum is σ = 250393880016. Its totient is φ = 21799895040.

The previous prime is 78508179433. The next prime is 78508179469. The reversal of 78508179456 is 65497180587.

It is a self number, because there is not a number n which added to its sum of digits gives 78508179456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89112136 + ... + 89113016.

Almost surely, 2^78508179456 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 78508179456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125196940008).

78508179456 is an abundant number, since it is smaller than the sum of its proper divisors (171885700560).

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

78508179456 is an equidigital number, since it uses as much as digits as its factorization.

78508179456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 78508179456 in words is "seventy-eight billion, five hundred eight million, one hundred seventy-nine thousand, four hundred fifty-six".