78068640237316 has 81 divisors (see below), whose sum is σ = 145211403292767. Its totient is φ = 36719531072640.

The previous prime is 78068640237299. The next prime is 78068640237317. The reversal of 78068640237316 is 61373204686087.

The square root of 78068640237316 is 8835646.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6190392802500 + 71878247434816 = 2488050^2 + 8478104^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78068640237317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52713463296 + ... + 52713464776.

Almost surely, 2^{78068640237316} is an apocalyptic number.

78068640237316 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

78068640237316 is the 8835646-th square number.

It is an amenable number.

78068640237316 is a deficient number, since it is larger than the sum of its proper divisors (67142763055451).

78068640237316 is an equidigital number, since it uses as much as digits as its factorization.

78068640237316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 78068640237316 in words is "seventy-eight trillion, sixty-eight billion, six hundred forty million, two hundred thirty-seven thousand, three hundred sixteen".