78448316928 has 80 divisors (see below), whose sum is σ = 209705702976. Its totient is φ = 26060042240.

The previous prime is 78448316927. The next prime is 78448316951. The reversal of 78448316928 is 82961384487.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78448316927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362893 + ... + 537203.

Almost surely, 2^78448316928 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 78448316928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104852851488).

78448316928 is an abundant number, since it is smaller than the sum of its proper divisors (131257386048).

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

78448316928 is a wasteful number, since it uses less digits than its factorization.

78448316928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174625 (or 174609 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 60.

The spelling of 78448316928 in words is "seventy-eight billion, four hundred forty-eight million, three hundred sixteen thousand, nine hundred twenty-eight".