78943226380782 has 8 divisors (see below), whose sum is σ = 157886452761576. Its totient is φ = 26314408793592.

The previous prime is 78943226380717. The next prime is 78943226380789. The reversal of 78943226380782 is 28708362234987.

It is a sphenic number, since it is the product of 3 distinct primes.

78943226380782 is an admirable number.

It is a super-2 number, since 2×78943226380782² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78943226380789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578602198393 + ... + 6578602198404.

It is an arithmetic number, because the mean of its divisors is an integer number (19735806595197).

Almost surely, 2^{78943226380782} is an apocalyptic number.

78943226380782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78943226380782 is a wasteful number, since it uses less digits than its factorization.

78943226380782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13157204396802.

The product of its (nonzero) digits is 390168576, while the sum is 69.

The spelling of 78943226380782 in words is "seventy-eight trillion, nine hundred forty-three billion, two hundred twenty-six million, three hundred eighty thousand, seven hundred eighty-two".