78862823424 has 910 divisors, whose sum is σ = 300920269956. Its totient is φ = 20483850240.

The previous prime is 78862823419. The next prime is 78862823443. The reversal of 78862823424 is 42432826887.

78862823424 is a `hidden beast` number, since 7 + 8 + 8 + 628 + 2 + 3 + 4 + 2 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 69 ways as a sum of consecutive naturals, for example, 7169347579 + ... + 7169347589.

Almost surely, 2^78862823424 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 78862823424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150460134978).

78862823424 is an abundant number, since it is smaller than the sum of its proper divisors (222057446532).

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

78862823424 is an frugal number, since it uses more digits than its factorization.

78862823424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 23 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 54.

The spelling of 78862823424 in words is "seventy-eight billion, eight hundred sixty-two million, eight hundred twenty-three thousand, four hundred twenty-four".