78614593920 has 192 divisors, whose sum is σ = 278087977440. Its totient is φ = 20452515840.

The previous prime is 78614593903. The next prime is 78614593921. The reversal of 78614593920 is 2939541687.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78614593921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69717 + ... + 402603.

It is a 1-persistent number, because it is pandigital, but 2⋅78614593920 = 157229187840 is not.

Almost surely, 2^78614593920 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 78614593920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139043988720).

78614593920 is an abundant number, since it is smaller than the sum of its proper divisors (199473383520).

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

78614593920 is a wasteful number, since it uses less digits than its factorization.

78614593920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332953 (or 332938 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 78614593920 in words is "seventy-eight billion, six hundred fourteen million, five hundred ninety-three thousand, nine hundred twenty".