78981070848 has 256 divisors, whose sum is σ = 225130026240. Its totient is φ = 24542969856.

The previous prime is 78981070841. The next prime is 78981070853. The reversal of 78981070848 is 84807018987.

It is a tau number, because it is divible by the number of its divisors (256).

It is a junction number, because it is equal to n+sod(n) for n = 78981070791 and 78981070800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78981070841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279084915 + ... + 279085197.

It is an arithmetic number, because the mean of its divisors is an integer number (879414165).

Almost surely, 2^78981070848 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 78981070848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112565013120).

78981070848 is an abundant number, since it is smaller than the sum of its proper divisors (146148955392).

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

78981070848 is a wasteful number, since it uses less digits than its factorization.

78981070848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 60.

The spelling of 78981070848 in words is "seventy-eight billion, nine hundred eighty-one million, seventy thousand, eight hundred forty-eight".