78810394080 has 192 divisors, whose sum is σ = 270962931456. Its totient is φ = 19095552000.

The previous prime is 78810394057. The next prime is 78810394127. The reversal of 78810394080 is 8049301887.

It is a super-2 number, since 2×78810394080² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17585440 + ... + 17589920.

It is an arithmetic number, because the mean of its divisors is an integer number (1411265268).

Almost surely, 2^78810394080 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 78810394080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135481465728).

78810394080 is an abundant number, since it is smaller than the sum of its proper divisors (192152537376).

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

78810394080 is a wasteful number, since it uses less digits than its factorization.

78810394080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7841 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 78810394080 in words is "seventy-eight billion, eight hundred ten million, three hundred ninety-four thousand, eighty".