78442930944 has 216 divisors, whose sum is σ = 264493861632. Its totient is φ = 21890856960.

The previous prime is 78442930939. The next prime is 78442931011. The reversal of 78442930944 is 44903924487.

78442930944 is a `hidden beast` number, since 78 + 442 + 93 + 0 + 9 + 44 = 666.

It is a super-2 number, since 2×78442930944² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 636949 + ... + 750059.

Almost surely, 2^78442930944 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 78442930944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132246930816).

78442930944 is an abundant number, since it is smaller than the sum of its proper divisors (186050930688).

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

78442930944 is a wasteful number, since it uses less digits than its factorization.

78442930944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113183 (or 113166 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 78442930944 in words is "seventy-eight billion, four hundred forty-two million, nine hundred thirty thousand, nine hundred forty-four".