78441336448 has 128 divisors (see below), whose sum is σ = 171697579200. Its totient is φ = 35563806720.

The previous prime is 78441336439. The next prime is 78441336451. The reversal of 78441336448 is 84463314487.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 78441336395 and 78441336404.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5277315 + ... + 5292157.

Almost surely, 2^78441336448 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 78441336448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85848789600).

78441336448 is an abundant number, since it is smaller than the sum of its proper divisors (93256242752).

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

78441336448 is a wasteful number, since it uses less digits than its factorization.

78441336448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14970 (or 14958 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 52.

The spelling of 78441336448 in words is "seventy-eight billion, four hundred forty-one million, three hundred thirty-six thousand, four hundred forty-eight".