78794924208 has 640 divisors, whose sum is σ = 285161748480. Its totient is φ = 18084003840.

The previous prime is 78794924189. The next prime is 78794924249. The reversal of 78794924208 is 80242949787.

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 127 ways as a sum of consecutive naturals, for example, 268924510 + ... + 268924802.

It is an arithmetic number, because the mean of its divisors is an integer number (445565232).

Almost surely, 2^78794924208 is an apocalyptic number.

78794924208 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78794924208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142580874240).

78794924208 is an abundant number, since it is smaller than the sum of its proper divisors (206366824272).

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

78794924208 is a wasteful number, since it uses less digits than its factorization.

78794924208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 78794924208 in words is "seventy-eight billion, seven hundred ninety-four million, nine hundred twenty-four thousand, two hundred eight".