78994766592 has 504 divisors, whose sum is σ = 286160376096. Its totient is φ = 21236318208.

The previous prime is 78994766579. The next prime is 78994766597. The reversal of 78994766592 is 29566749987.

78994766592 is a `hidden beast` number, since 7 + 8 + 9 + 9 + 476 + 65 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 78994766592.

It is not an unprimeable number, because it can be changed into a prime (78994766597) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 22206478 + ... + 22210034.

It is an arithmetic number, because the mean of its divisors is an integer number (567778524).

Almost surely, 2^78994766592 is an apocalyptic number.

78994766592 is a gapful number since it is divisible by the number (72) 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 78994766592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143080188048).

78994766592 is an abundant number, since it is smaller than the sum of its proper divisors (207165609504).

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

78994766592 is an equidigital number, since it uses as much as digits as its factorization.

78994766592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615 (or 3586 counting only the distinct ones).

The product of its digits is 411505920, while the sum is 72.

The spelling of 78994766592 in words is "seventy-eight billion, nine hundred ninety-four million, seven hundred sixty-six thousand, five hundred ninety-two".